EU Regulation 396/2005: Pesticide Residue Testing and the Critical Role of QuEChERS Evaporation in Food Safety

<div><div><p><strong>Researchers led by </strong><a target="_blank" rel="noopener noreferrer" href="https://kudova.group.uochb.cz/en"><strong>Eva Kudová</strong></a><strong> from IOCB Prague and Jitka Viktorová from UCT Prague have identified new androstane-based steroid derivatives that can significantly improve the effectiveness of existing antibiotics against multidrug-resistant </strong><i><strong>Staphylococcus aureus</strong></i><strong>.</strong></p></div></div><div><p>The team screened dozens of natural steroidal hormones and synthetic derivatives to see whether they could block bacterial efflux pumps – mechanisms that bacteria use to eject antibiotics and survive treatment. Two compounds emerged as particularly promising: they inhibited efflux pumps and lowered the effective doses of antibiotics such as ciprofloxacin and erythromycin.</p><p>Further analysis showed that one of the compounds also suppressed genes linked to bacterial virulence. Another key finding is that the most active molecules are non-toxic to human immune cells and showed no detectable endocrine activity, suggesting a favorable safety profile.</p><p>These findings support the idea that rationally designed steroid-based molecules could act as antibiotic adjuvants, helping existing drugs overcome bacterial resistance.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/IOCB_Prague_Steroidal_hormones_and_neurosteroids_novel_therapeutic_strategies_in_bacterial_infections_8e5d2a7b48.jpg" alt="IOCB Prague: Steroidal hormones and neurosteroids – novel therapeutic strategies in bacterial infections" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_IOCB_Prague_Steroidal_hormones_and_neurosteroids_novel_therapeutic_strategies_in_bacterial_infections_8e5d2a7b48.jpg 222w," sizes="100vw" width="1258" height="886"></p><blockquote><h4><strong>Original Article</strong></h4><h4><a target="_blank" rel="noopener noreferrer" href="https://www.sciencedirect.com/science/article/pii/S0223523426001613?via%3Dihub"><strong>Steroidal hormones and neurosteroids - novel therapeutic strategies in bacterial infections: Design, synthesis, and biological evaluation</strong></a></h4><p>Daniela Brdová, Bára Křížkovská, Jan Špaček, Zdeněk Míchal, Eva Jablonská, Ondřej Strnad, Hana Chodounská, Eszter Szánti-Pintér, Marina Morozovová, Václav Hanžl, Jan Tkadlec, Martijn Riool, Jan Lipov, Jitka Viktorová, Eva Kudová&nbsp;</p><p><i><strong>Eur. J. Med. Chem., 2026, 308, 118716</strong></i></p><p><a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.1016/j.ejmech.2026.118716">https://doi.org/10.1016/j.ejmech.2026.118716</a></p><h6>licensed under <a target="_blank" rel="noopener noreferrer" href="https://creativecommons.org/licenses/by/4.0/"><strong>CC-BY 4.0</strong></a></h6></blockquote><h4><strong>Abstract</strong></h4><p>The global rise of antibiotic resistance necessitates novel therapeutic strategies for infectious diseases. Inhibition of bacterial efflux pumps, which contribute to multidrug resistance, represents a promising approach to restore or even increase the efficacy of existing antibiotics. Using fluorescence-based ethidium bromide accumulation, broth microdilution, and checkerboard assays, we evaluated 26 endogenous steroidal hormones and neurosteroids, along with 30 synthetic derivatives, for their ability to enhance antibiotic susceptibility in multidrug-resistant <i>Staphylococcus aureus</i>. Structure-activity relationship analysis identified compounds <strong>13</strong> and <strong>16</strong> as lead candidates, exhibiting strong efflux pump inhibition and marked reductions in the minimum inhibitory concentrations of ciprofloxacin and erythromycin. Both compounds showed additive effects in checkerboard assays. Modifications at C-3 (polar substitution) and C-17 (3α,5β-stereochemistry and nonpolar substitution) were essential for potent efflux inhibition and sensitization, although these modifications were not additive when combined. Transcriptome analysis further revealed that compound <strong>13</strong> significantly downregulated <i>S. aureus</i> virulence-associated genes when administered alone or in combination with antibiotics. Cytotoxicity assessment in human peripheral blood mononuclear cells and receptor transactivation assays for estrogen, androgen, and progesterone receptors indicated that the most active derivatives were non-toxic and lacked detectable endocrine activity, suggesting a favorable safety profile. Overall, these findings support the concept that rationally designed andostane-based steroidal scaffolds can function as competitive bacterial efflux pump inhibitors and serve as potential antibiotic adjuvants to mitigate efflux-mediated resistance.</p><h4><strong>Instrumentation</strong></h4><h5><strong>Structural characterization</strong></h5><ul><li><strong>AVANCE III 400 MHz NMR spectrometer</strong> (Bruker)</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=3&amp;search=LTQ+Orbitrap+XL"><strong>LTQ Orbitrap XL HRMS</strong></a> (Thermo Fisher Scientific, ESI)</li></ul></div>

Steroidal hormones and neurosteroids – novel therapeutic strategies in bacterial infections

<p><strong>Metformin is currently the first-line oral drug of choice for the treatment of type 2 diabetes. It reduces glucose production in the liver, improves tissue sensitivity to insulin, and does not cause weight gain or hypoglycemia, which sets it apart from some other antidiabetic drugs. Moreover, its long-term beneficial effects on the risk of cardiovascular complications and mortality in people with type 2 diabetes have been well established. Researchers from the Institute of Physiology CAS (IPHYS) have identified a new group of blood metabolites that could help physicians objectively monitor whether patients with type 2 diabetes are taking their metformin as prescribed.</strong></p><h4><strong>New biomarkers for metformin use</strong></h4><p>A team led by Tomáš Čajka from the Laboratory of Translational Metabolism at IPHYS analyzed plasma samples from <strong>637 patients with type 2 diabetes treated with metformin</strong> and <strong>143 non-diabetic controls</strong> using advanced metabolomics and lipidomics. Among 614 detected metabolites, they identified five from the group of <strong>N-lactoyl-amino acids </strong>(e.g. N‑lactoyl-phenylalanine), which had previously been seen as unknown signals due to missing reference spectra in databases. The levels of these metabolites in the blood closely reflected the plasma concentrations of metformin. In patients with the highest metformin exposure, the concentrations of these metabolites were up to 7.2 times higher than in controls.</p><h4><strong>A sensitive “fingerprint” of the drug’s effect</strong></h4><p>N-Lactoyl-amino acids are formed in cells by combining lactate and amino acids, thus reflecting the metformin-induced changes in cellular energy metabolism. “<i>Importantly, even though they occur in plasma only at nanomolar concentrations, they reliably distinguish patients who take metformin regularly from those who take it irregularly or not at all</i>,” emphasizes T. Čajka.</p><h4><strong>Metabolomics in practice and international collaboration</strong></h4><p>The study also provides a detailed description of broader metabolic changes in type 2 diabetes, including increases in lactate, organic acids, and branched-chain amino acids, as well as extensive remodelling of the lipid profile. In addition to T. Čajka’s team, collaborators from the Institute for <strong>Clinical and Experimental Medicine in Prague</strong> and the <strong>West Coast Metabolomics Center</strong> (University of California, Davis) also participated in the study.</p><p>The results demonstrate that advanced metabolomics approaches developed at IPHYS within the <strong>CarDia project</strong> can find highly practical applications both in clinical studies and in personalized monitoring of treatment in patients with diabetes.</p><blockquote><h4><strong>The original article</strong></h4><h4><a target="_blank" rel="noopener noreferrer" href="https://ascpt.onlinelibrary.wiley.com/doi/10.1002/cpt.70205"><strong>Untargeted Metabolomics Identifies N-Lactoyl-Amino Acids as Dose-Responsive Plasma Biomarkers of Metformin Adherence in Type 2 Diabetes</strong></a></h4><p>Tomas Cajka, Jiri Hricko, Lucie Rudl Kulhava, Michaela Paucova, Michaela Novakova, Veronika Hola, Stanislava Rakusanova, Oliver Fiehn, Vojtech Skop, Ivana Lankova, Iva Miskova, Terezie Pelikanova, Martin Haluzik</p><p>Clin Pharmacol Ther, 119: 1057-1069</p><p><a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.1002/cpt.70205">https://doi.org/10.1002/cpt.70205</a></p><h6>licensed under <a target="_blank" rel="noopener noreferrer" href="https://creativecommons.org/licenses/by/4.0/"><strong>CC-BY 4.0</strong></a></h6></blockquote><h4><strong>Abstract</strong></h4><p>Metformin is the most widely prescribed antidiabetic drug, yet adherence remains difficult to objectively assess. Using untargeted metabolomics and lipidomics, we analyzed plasma from 637 patients with type 2 diabetes (T2D) with confirmed metformin use and 143 nondiabetic controls, annotating 614 metabolites. Patients were stratified by plasma metformin into sub-therapeutic, therapeutic, and supra-therapeutic groups, and associations were evaluated by multiple linear regression and composite metabolite ranking. Five previously unannotated features were structurally identified as N-lactoyl-amino acids, whose levels correlated strongly with plasma metformin (ρ = 0.42–0.55, P &lt; 0.0001) and increased up to 7.2-fold in the supra-therapeutic group (&gt; 2000 ng/mL). While N-lactoyl-amino acids were consistently detected in the nanomolar range, they still displayed robust and dose-dependent associations with metformin. Broader metabolic changes in T2D included elevated lactate, organic acids, and branched-chain amino acids, together with reduced urea cycle metabolites. Lipidomics showed increases in saturated triacylglycerols and diacylglycerols and decreases in cholesteryl esters, sphingomyelins, and phospholipids. These findings establish N-lactoyl-amino acids as robust, dose-responsive plasma biomarkers of metformin exposure. Despite being up to four orders of magnitude less abundant than their amino acid precursors, they sensitively reflect mitochondrial lactate overflow and pharmacodynamic adaptation, offering objective assessment of adherence.</p>

New blood biomarkers reveal how faithfully diabetes patients take metformin

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The Czech Academy of Sciences (CAS) was established by Act No. 283/1992 Coll. as the Czech successor of the former Czechoslovak Academy of Sciences. It is set up as a complex of 54 public research institutions.

Czech Academy of Sciences

The Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences (IOCB Prague) is a leading scientific institution in the Czech Republic, recognized internationally. Its primary mission is basic research in the fields of chemical biology and medicinal chemistry, organic and material oriented chemistry, chemistry of natural compounds, biochemistry and molecular biology, physical chemistry, theoretical chemistry, and analytical chemistry. 

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Waters Xevo G2-XS QTof Quadrupole Time-of-Flight Mass Spectrometry

The Xevo® G2-XS QTof combines StepWaveTM ion optics with the XS Collision Cell, providing a significant increase in sensitivity with no reduction in selectivity.

<h4><strong>eXtreme Sensitivity, eXtraordinary Selectivity, eXceptional Solutions</strong></h4><div><p><strong>For the scientist who needs to identify, quantify and confirm the broadest range of compounds in the most complex and challenging samples.</strong></p><ul><li>Maximum robustness with no compromise in performance</li><li>Class-leading real-world quantitative sensitivity</li><li>Highest quality, most comprehensive qualitative information</li><li>Flexibility to adapt to changing needs</li><li>Accessible to experts and non-experts alike</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Xevo_G2_XS_Q_Tof_Quadrupole_Time_of_Flight_Mass_Spectrometry_1_b9f8dd32be/Waters-Xevo-G2-XS-QTof-Quadrupole-Time-of-Flight-Mass-Spectrometry-1.jpg" alt="Waters Xevo G2-XS QTof Quadrupole Time-of-Flight Mass Spectrometry." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Xevo_G2_XS_Q_Tof_Quadrupole_Time_of_Flight_Mass_Spectrometry_1_b9f8dd32be/thumbnail_Waters-Xevo-G2-XS-QTof-Quadrupole-Time-of-Flight-Mass-Spectrometry-1.jpg 173w," sizes="100vw" width="1099" height="991"></p><h3><strong>Overview</strong></h3><div><h4><strong>Maximum robustness with no compromise in performance</strong></h4><p>The trend for increasing complexity of both samples and studies can result in difficulty obtaining high quality data for every component of interest while maintaining optimum performance throughout the analysis.</p><p>The <strong>Xevo® G2-XS QTof</strong> combines <strong>StepWave<sup>TM</sup> ion optics</strong> with the <strong>XS Collision Cell</strong>, providing a significant increase in sensitivity with no reduction in selectivity.&nbsp; During long analyses, critical hardware components stay clean for longer, so results are more reproducible and the laboratory stays productive.</p><p>Meaningful information is obtained for a greater number of components across a larger population of samples than ever before, giving a more complete picture for improved understanding and more confident decision making.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Xevo_G2_XS_Q_Tof_Quadrupole_Time_of_Flight_Mass_Spectrometry_437f84bacd.jpg" alt="Waters Xevo G2-XS QTof Quadrupole Time-of-Flight Mass Spectrometry: Maximum robustness with no compromise in performance." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Xevo_G2_XS_Q_Tof_Quadrupole_Time_of_Flight_Mass_Spectrometry_437f84bacd.jpg 224w," sizes="100vw" width="900" height="628"></p><div><h4><strong>Class-leading real-world quantitative sensitivity</strong></h4><p>In targeted quantitative analysis, the greatest challenge is to detect and quantify components of interest down to the lowest possible levels, often in the presence of interferences from complex matrix.&nbsp; Large variation in the concentrations of different components further adds to this challenge.</p><p>The <strong>Xevo G2-XS QTof</strong> combines sensitivity and selectivity with the mass accuracy, dynamic range and speed provided by <strong>QuanTofTM technology</strong> and the enhanced quantitative capability of <strong>Tof-MRM data acquisition</strong>.&nbsp; The end result is class-leading quantitative performance in real everyday laboratory conditions, demonstrated by limits of detection and quantification superior to anything achieved before with high resolution MS.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Xevo_G2_XS_Q_Tof_Quadrupole_Time_of_Flight_Mass_Spectrometry_2_d805c7aa49.jpg" alt="Waters Xevo G2-XS QTof Quadrupole Time-of-Flight Mass Spectrometry: Class-leading real-world quantitative sensitivity." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Xevo_G2_XS_Q_Tof_Quadrupole_Time_of_Flight_Mass_Spectrometry_2_d805c7aa49.jpg 245w," sizes="100vw" width="900" height="312"></p><div><h4><strong>Highest quality, most comprehensive qualitative information</strong></h4><p>In addition to accurate quantitative profiles, complete understanding of a sample requires detailed and comprehensive qualitative information.</p><p><strong>MS<sup>E</sup></strong> is a simple but powerful approach that delivers accurate mass precursor and fragment ion data for every detectable component, whether chromatographically resolved or not.&nbsp; This represents the ultimate in qualitative information, and because the approach is un-targeted, the data can be interrogated again later as scientific questions evolve.</p><p><strong>FastDDA</strong> is an automated, targeted data acquisition method that provides rapid, intelligent accurate mass MS/MS capability for confirmation of known compounds or characterization of unknowns, for situations where only true MS/MS data will suffice.</p><h4><strong>Flexibility to adapt to changing needs</strong></h4><div><p>The growing emphasis on efficiency and productivity in the laboratory demands analytical systems that are not only robust and reliable, but that also have the flexibility to accomplish a wide variety of tasks today, with future-proofing for the innovations of tomorrow.&nbsp;</p><p><strong>Waters’ Universal Ion Source Architecture</strong> enables the use of a single analytical platform for many different applications and molecule types, as well as providing the option to add new functionality as requirements and priorities change.&nbsp; All source options are designed to be quickly interchangeable and ready to use within minutes, maximizing versatility and minimizing downtime.</p><div><h3><strong>Accessible to experts and non-experts alike</strong></h3><p>Traditionally the ability to achieve and maintain optimum performance from such a powerful analytical system would require a level of knowledge and experience held only by expert users.</p><p>The <strong>Xevo G2-XS QTof</strong> features <strong>IntelliStartTM technology</strong>, an intuitive user interface that automates routine tasks and ensures reproducible data of the highest quality, ensuring the full capability of the system is accessible to all.</p><p><strong>IntelliStart enables essential functions to be carried out automatically:</strong></p><ul><li>MS resolution and calibration checks</li><li>Simple setup of diverse experiments</li><li>Scheduled LC-MS system checks</li><li>Continuous system monitoring</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Xevo_G2_XS_Q_Tof_Quadrupole_Time_of_Flight_Mass_Spectrometry_3_279cf35277.jpg" alt="Waters Xevo G2-XS QTof Quadrupole Time-of-Flight Mass Spectrometry: Accessible to experts and non-experts alike." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Xevo_G2_XS_Q_Tof_Quadrupole_Time_of_Flight_Mass_Spectrometry_3_279cf35277.jpg 136w," sizes="100vw" width="900" height="1038"></p></div></div></div></div></div></div>

Waters SELECT SERIES Cyclic IMS

The SELECT SERIES Cyclic IMS combines novel cyclic ion mobility separation with state-of-the-art, high performance, time-of-flight mass spectrometry.

<div><div id="title-c6692d35e8" data-locator="title-with-text"><h3><strong>Endless possibilities. Limitless research.</strong></h3></div></div><div><div id="text-ba9d3d94da" data-locator="text"><p><strong>Developed through focused collaboration, the SELECT SERIES Cyclic IMS combines novel cyclic ion mobility separation with state-of-the-art, high performance, time-of-flight mass spectrometry, enabling leading researchers to unlock the potential in scientific discovery.</strong></p><p>The SELECT SERIES Cyclic IMS enables selection of ions by both mass and mobility, a unique functionality of <strong>Cyclic Ion Mobility (cIM)</strong> that provides unparalleled flexibility and capabilities for research studies in both academia and industry. With ion mobility and mass spectrometry, you can separate by shape as well as&nbsp;<i>m/z</i>&nbsp;for separation of isomers, measure the <strong>Collisional Cross Section (CCS)</strong> of an ion, and achieve significantly cleaner mass spectral data.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_SELECT_SERIES_Cyclic_IMS_Novel_Cyclic_Ion_Mobility_c_IM_Technology_13abf6dd9b.jpg" alt="Waters SELECT SERIES Cyclic IMS: Novel Cyclic Ion Mobility (cIM) Technology." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_SELECT_SERIES_Cyclic_IMS_Novel_Cyclic_Ion_Mobility_c_IM_Technology_13abf6dd9b.jpg 234w," sizes="100vw" width="1024" height="682"></p><h3><strong>Overview</strong></h3><div data-locator="section-container-body"><div><div><div data-locator="layoutcontainer-"><div><div id="text-26eab4b89b" data-locator="text"><ul><li>Combine <strong>cyclic ion mobility (cIM) separation</strong> with <strong>ToF mass spectrometry</strong></li><li>Separate more than ever before with ultimate ion mobility resolution for complete confidence</li><li>Perform <strong>unique IMS<sup>n</sup> experiments</strong> for increased selectivity and advanced characterization</li><li>Enable <strong>pre-mobility mass selection</strong> and <strong>mobility selection of precursor and product ions</strong></li><li>Achieve increased experimental flexibility for solving complex problems with three distinct fragmentation regions</li></ul></div></div><div><div id="text-36ff553b5f" data-locator="text"><h3><strong>Recommended Use</strong></h3><p>For identifying and rapidly monitoring co-eluting, isomeric metabolites in chemical reactions</p><blockquote><p class="cke-user_style-important"><strong>Video: </strong><a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/watch?v=nauwVH0L91o"><strong>Waters SELECT SERIES Cyclic IMS</strong></a></p></blockquote><div><div id="text-8469d7776e" data-locator="text"><h3 data-locator="modal-title"><strong>Discover more with ultimate ion mobility resolution</strong></h3><p>The instrument design and control software enable a range of experiments, including acquisition of Tof data, Single pass ion mobility, and the ability to scale mobility resolution to match the complexity of a sample. Ion mobility resolution increases with the length of the mobility device and therefore with the number of passes.</p><figure class="image"><img style="aspect-ratio:1024/682;" src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_SELECT_SERIES_Cyclic_IMS_IMS_resolution_increases_with_the_number_of_passes_around_the_c_IM_device_121719dbe0.jpg" alt="Waters SELECT SERIES Cyclic IMS: IMS resolution increases with the number of passes around the cIM device. Demonstrated here by the separation of reverse sequence peptides SDGRG and GRGDS. The Arrival Time Distributions (ATDs) obtained after 100 passes around the device are inset." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_SELECT_SERIES_Cyclic_IMS_IMS_resolution_increases_with_the_number_of_passes_around_the_c_IM_device_121719dbe0.jpg 234w," sizes="100vw" width="1024" height="682"></figure><div><div id="text-bb2fb9f91c" data-locator="text"><h3 data-locator="modal-title"><strong>Unlock the potential in scientific discovery</strong></h3><p>The unique instrument design of the SELECT SERIES Cyclic IMS&nbsp;facilitates advanced ion mobility experiments like IMS<sup>n</sup>&nbsp;isolation. IMS<sup>n</sup>&nbsp;isolation&nbsp;extends the resolution of a specific mobility range,&nbsp;<i>e.g.,</i>&nbsp;ions of a specific species. Eject ions (without acquisition) outside of the desired mobility range, leaving the remaining species in the cIM to continue the separation process. This “trimming” approach can be undertaken numerous times and can be used, for example, to increase specificity of the selected ions or to prevent “wrap-around” in the cIM where high mobility ions catch up with low mobility ions in multi-pass experiments. Multiple cyclic sequences of different numbers of passes can be defined in one, multi-pass LC-MS method, increasing productivity by reducing the need for multiple injections of the same sample.</p></div></div><figure class="image"><img style="aspect-ratio:1024/578;" src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_SELECT_SERIES_Cyclic_IMS_Investigation_into_acyl_glucuronides_via_infusion_f3bf2c67e2.jpg" alt="Waters SELECT SERIES Cyclic IMS: Investigation into acyl glucuronides via infusion. Slicing enables further IMS separation of target metabolite (blue region) of interest and other ions can be ejected. Increasing the IMS resolution reveals an additional 4-O acyl. In collaboration with Imperial College London – Ian D. Wilson." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_SELECT_SERIES_Cyclic_IMS_Investigation_into_acyl_glucuronides_via_infusion_f3bf2c67e2.jpg 245w," sizes="100vw" width="1024" height="578"></figure><div><div id="text-78a4dc4d5e" data-locator="text"><h3 data-locator="modal-title"><strong>Undertake advanced structural characterization</strong></h3><p><strong>IMS<sup>n</sup>&nbsp;activation</strong>&nbsp;is ideal for <strong>advanced structural characterization</strong>. During mobility separation, excise a segment of the mobility separated species and send the ions to the pre array storage device. Unwanted ions are ejected, and the stored ions are then re-injected into the array under collision induced activation/dis-sociation conditions, as required, and subsequent mobility separation performed. The product ions can then be sent to the&nbsp;Tof<i>&nbsp;</i>for detection or can undergo further rounds of mobility selection providing the unique IMS<sup>n</sup>&nbsp;capability.</p></div></div><div><div id="text-079d02ceb8" data-locator="text"><h3 data-locator="modal-title"><strong>Imaging mass spectrometry with DESI XS and Cyclic IMS</strong></h3><p>The unique combination of&nbsp;<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?instrumentationItems=26&amp;mainauthorItems=5&amp;search=DESI+XS"><strong>DESI XS</strong></a><strong>&nbsp;</strong>with SELECT SERIES Cyclic IMS provides ultimate levels of specificity for <strong>MS imaging</strong> approaches. DESI XS produces a visual map of the spatial distribution of a wide range of analytes, for example small molecule drugs, metabolites, and lipids across the surface of a tissue sample, and the unique capabilities and modes of acquisition of Cyclic IMS enable comprehensive in-depth experiments to be performed.</p></div></div><div><div id="text-673d117887" data-locator="text"><h3 data-locator="modal-title"><strong>Increased sensitivity provides confidence in what you find</strong></h3><p>To complement the novel <strong>Cyclic Ion Mobility</strong> capability and for complete confidence in your data, the&nbsp;SELECT SERIES&nbsp;Cyclic IMS is equipped with the latest <strong>ToF technology</strong>. The XS transfer device maintains the fidelity of the ion mobility separation while simultaneously conditioning the ion beam for the absolute best time-of-flight performance. The new offset oa-Tof with dual gain detection system <strong>provides improved sensitivity, resolution &gt;100,000 (FWHM), reliable accurate exact mass measurements</strong> (low ppm), and <strong>improved dynamic range</strong>.</p><figure class="image"><img style="aspect-ratio:1024/682;" src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Mass_spectrum_highlighting_resolution_of_100_000_FWHM_on_the_7_charge_state_of_monomeric_9ff8f53204.jpg" alt="Waters SELECT SERIES Cyclic IMS: Mass spectrum highlighting resolution of >100,000 (FWHM) on the 7+ charge state of monomeric." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Mass_spectrum_highlighting_resolution_of_100_000_FWHM_on_the_7_charge_state_of_monomeric_9ff8f53204.jpg 234w," sizes="100vw" width="1024" height="682"></figure></div></div></div></div></div></div></div></div></div></div></div></div>

Waters SYNAPT XS High Resolution Mass Spectrometer

The SYNAPT XS Ion Mobility Time-of-Flight Mass Spectrometer provides ultimate flexibility, offering greater freedom of analytical choice to support scientific creativity and technical success for any application.

<div><div><h4><strong>Ultimate flexibility for deeper discovery</strong></h4></div></div><div><div><p><strong>In the arena of scientific discovery, the slow pace of advancement and escalating costs of research can prove to be a challenge. Unlike competitor systems with restricted inlet options, scan function limitations, or requiring multiple platforms, only Waters offers an all-encompassing high-performing LC-MS solution, the SYNAPT XS mass spectrometer, for ultimate flexibility and greater freedom of analytical choice – supporting scientific creativity and technical success for any application.</strong></p><ul><li><strong>Novel technology building blocks deliver cutting-edge analytical performance</strong></li><li><strong>SONAR</strong> and <strong>HDMSE</strong> provide a unique toolkit for interrogating complex mixtures</li><li><strong>Ion mobility</strong> multiplies peak capacity and selectivity of analysis</li><li><strong>CCS measurements</strong> increase security of compound identification</li><li><strong>Deeper discovery in Mass Spectrometry Imaging</strong> with<strong> </strong><a target="_blank" rel="noopener noreferrer" href="https://www.waters.com/waters/Full-Spectrum-Molecular-Imaging-/nav.htm?cid=135070661"><strong>Full Spectrum Molecular Imaging</strong></a> enabled by <a target="_blank" rel="noopener noreferrer" href="https://www.waters.com/waters/DESI-XS---Desorption-Electrospray-Ionization-/nav.htm?cid=135047466"><strong>DESI XS</strong></a> and MALDI</li></ul><h4><strong>Overview</strong></h4><div><div><div><div><ul><li><strong>Serve the broadest range of applications </strong>with the most extensive range of chromatograph inlets for ultimate flexibility</li><li><strong>Attain fragment ion information for every detectable component</strong> for unambiguous confirmation of compound identity with DIA modes <strong>SONAR</strong>, MSE, and <strong>HDMSE</strong></li><li><strong>Generate rich fragmentation data</strong> from highly complex samples in all acquisition modes including DDA</li><li>Simplify and streamline the mass spectral imaging workflow and deliver multi-layered, information-rich data with multiple imaging techniques and accompanying High Definition Imaging (HDI) Software</li><li><strong>Achieve automated higher order structure determination </strong>thorough confident identification, intact mass analysis, and best-in-class reproducibility</li><li><strong>Enhance MS/MS possibilities</strong> using complementary fragmentation techniques with high resolution and accurate mass measurements</li></ul></div></div><div><div><h5><strong>Recommended Use</strong></h5><p>For deeper discovery by aligning complimentary workflows on a single <strong>Ion mobility</strong> enabled time-of-flight mass spectrometer with the flexibility of multiple ion sources and acquisition modes.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_SYNAPT_XS_High_Resolution_Mass_Spectrometer_4_696d77ce2b.jpg" alt="Waters SYNAPT XS High Resolution Mass Spectrometer: The Waters SYNAPT XS offers flexibility and freedom of analytical choice with an extensive range of chromatographic inlets." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_SYNAPT_XS_High_Resolution_Mass_Spectrometer_4_696d77ce2b.jpg 234w," sizes="100vw" width="1024" height="682"></p><div><div><h3><strong>Cutting edge performance with novel technology</strong></h3><p>With technology building blocks inherited from the <strong>Waters Advanced Mass Spectrometry</strong> <strong>SELECT SERIES</strong>, advanced innovation is built-in, ensuring scientists using this platform are at the cutting edge of mass spectrometry while retaining the ease of use and established end-to-end workflows for which the <strong>SYNAPT </strong>is well known.</p><ul><li><strong>StepWave&nbsp;XS -&nbsp;</strong>Redesigned segmented quadrupole transfer optics provide enhanced sensitivity for challenging compounds while further improving levels of analytical robustness.</li><li><strong>Extended ToF -&nbsp;</strong>Delivers UPLC-compatible mass resolution, matrix-tolerant dynamic range, and quantitative results for the most complex samples, while offering superior specifications to previous SYNAPT models.</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_SYNAPT_XS_High_Resolution_Mass_Spectrometer_9f19abb382.jpg" alt="Waters SYNAPT XS High Resolution Mass Spectrometer: SYNAPT XS schematic." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_SYNAPT_XS_High_Resolution_Mass_Spectrometer_9f19abb382.jpg 245w," sizes="100vw" width="1024" height="546"></p></div></div><div><div><h3><strong>Interrogate complex mixtures with a unique toolkit</strong></h3><p>A complete analytical strategy requires the combination of appropriate complementary techniques to see the bigger picture. With both <strong>SONAR</strong> and IMS-based <strong>data independent acquisition</strong> (DIA) modes of operation on the SYNAPT XS, the discovery analyst is in a unique position to interrogate complex mixtures by complementary mechanisms. Both types of acquisition increase analytical <strong>peak capacity</strong>, providing ‘clean and clear’ fragmentation data, but based on different molecular properties. This provides a truly unique investigative toolbox for the in-depth interrogation of complex mixtures.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_SYNAPT_XS_High_Resolution_Mass_Spectrometer_2_9179e575a4.jpg" alt="Waters SYNAPT XS High Resolution Mass Spectrometer: During each scan the quadrupole separates co-eluting precursor masses by scanning the mass range, and transiting them in sequence. Fragment ions from different precursors can then be recorded separately and assigned with confidence." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_SYNAPT_XS_High_Resolution_Mass_Spectrometer_2_9179e575a4.jpg 245w," sizes="100vw" width="1024" height="593"></p></div></div><div><div><h3><strong>Discover more with ion mobility and CSS measurement</strong></h3><p>Conventional mass spectrometers separate components based on m/z. The SYNAPT XS also allows separation of molecules according to<strong> their size, shape, and charge during ion mobility experiments as a function of their collisional cross section</strong> (CCS). As well as ion mobility offering an additional dimension of resolution, multiplying <strong>peak capacity</strong>, and <strong>selectivity of analysis</strong> the measurement of CCS offers additional molecular identifiers. The measured CCS of an ion can be used to help confirm an ion’s identity or investigate its structure. The inclusion of ion mobility significantly increases the extent and confidence with which a scientist can profile complex mixtures and complex molecules – dramatically enhancing sample definition.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_SYNAPT_XS_High_Resolution_Mass_Spectrometer_3_2240bff527.jpg" alt="Waters SYNAPT XS High Resolution Mass Spectrometer: Retention and drift time principle ion mobility enabled data-independent LC-HDMSE analysis (LC-DIA-IM-MS)." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_SYNAPT_XS_High_Resolution_Mass_Spectrometer_3_2240bff527.jpg 204w," sizes="100vw" width="1024" height="784"></p></div></div><div><div><h3><strong>Achieve ultra-confident structural characterization of components</strong></h3><p>Time aligned parallel (TAP) fragmentation is an acquisition mode unique to the T-Wave IMS design. It permits users to take the advantage of the <strong>TriWave configuration</strong>, which allows the pre-IMS T-Wave and post-IMS T-Wave to operate as two separate collision cells. The resultant CID-IMS-CID instrumental operation helps to provide ultra-confident structural characterization of components. <strong>TAP fragmentation</strong> provides a distinct advantage for building a complete structure, through superior fragment ion coverage, sensitivity, and accuracy compared to traditional MSⁿ or MS/MS techniques.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_SYNAPT_XS_High_Resolution_Mass_Spectrometer_5_4dd33f1ab5.jpg" alt="Waters SYNAPT XS High Resolution Mass Spectrometer: Schematic showing Time Aligned Parallel Fragmentation. " srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_SYNAPT_XS_High_Resolution_Mass_Spectrometer_5_4dd33f1ab5.jpg 234w," sizes="100vw" width="1024" height="682"></p></div></div></div></div></div></div></div></div>

Products focused on LC/TOF - page 2

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