USP Method Transfer and Routine Use Analysis of Irbesartan Tablets from HPLC to UPLC

Importance of the Topic

Efficient transfer of pharmacopeial methods from HPLC to UPLC is crucial for modern analytical laboratories seeking faster analysis, lower solvent and sample consumption, and improved throughput. Demonstrating robust performance under routine QC conditions drives wider adoption of sub-2 micron chromatography.

Objectives and Overview of the Study

This study illustrates the translation of the USP monograph for irbesartan tablets from a 20 minute HPLC assay to a 3 minute UPLC assay. Key goals include preserving resolution and precision while achieving significant reductions in run time, solvent use, and sample volume, and verifying long-term robustness over 3000 injections.

Methodology and Instrumentation

• HPLC System Configuration Alliance HPLC with 2489 UV detector, XSelect HSS T3 4.6×250 mm 5 µm column, mobile phase acetonitrile and 0.55 % phosphoric acid buffer pH 3.0 (40∶60), flow rate 1.0 mL/min, run time 20 min.
• UPLC System Configuration ACQUITY UPLC with TUV detector, ACQUITY UPLC HSS T3 2.1×100 mm 1.8 µm column, same mobile phase composition, flow rate 0.58 mL/min, run time 3 min.
• Method Translation Tools Waters Reversed-Phase Column Selectivity Chart and ACQUITY UPLC Columns Calculator used to scale retention factors and preserve chromatographic performance.
• Sample and Standard Preparation Stock irbesartan solution 15 mg/mL in methanol, diluted to 0.15 mg/mL. Tablet powder equivalent to 15 mg ultrasonicated in methanol, filtered, and adjusted to 0.15 mg/mL according to USP34 NF29.
• System Suitability %RSD ≤1.5 for five replicates, verified on both platforms prior to routine use study.

Main Results and Discussion

Both HPLC and UPLC methods met USP system suitability criteria, with area RSD values below 0.5 %. The UPLC method reduced run time by 85 %, solvent usage by 91 %, and sample volume by 86 % while maintaining resolution and quantitation performance. Over 3000 consecutive UPLC injections, area precision remained within limits and system backpressure held stable around 10800 psi, confirming column robustness under low pH conditions.

Benefits and Practical Applications

• High-throughput QC analysis for irbesartan and similar compounds.
• Significant cost savings in solvents and consumables.
• Reduced turnaround time for batch release.
• Enhanced laboratory productivity and sustainability.

Future Trends and Potential Applications

Automation of method translation using advanced calculators and AI driven tools will further streamline adoption of UPLC. Expansion of sub-2 micron chemistries into other pharmacopeial assays is expected, along with integration of green analytical practices. Continuous monitoring of column health and dynamic method adaptation will support next-generation QC workflows.

Conclusion

The USP irbesartan assay was successfully migrated from HPLC to UPLC with substantial improvements in efficiency and sustainability while preserving analytical performance. Robustness over thousands of injections underscores UPLC suitability for routine pharmacopeial testing.

References

1. USP Monograph Irbesartan USP34 NF29 3187 United States Pharmacopeial Convention official May 1 2011
2. USP Chapter 621 USP34 NF29 243 Pharmacopeial Forum 35(6):1516
3. Jones MD Alden P Fountain KJ Aubin A Implementation of Methods Translation between Liquid Chromatography Instrumentation Waters Application Note part 720003721EN 2010