
The Maurer, Meyer, Helfer, Weber: LC-HR-MS/MS Library of Drugs, Poisons, and Their Metabolites, 2nd Edition (MMHW) is one of the most comprehensive LC-MS resources for clinical and forensic toxicologists. Developed by Prof. Hans H. Maurer and his team, the database emphasizes metabolites essential for accurate toxicological screening.
This edition contains over 5,500 high-quality spectra, covering 2,300+ parent drugs/poisons and 3,200+ metabolites or artifacts across 100+ classification groups. Substances are categorized by toxicological relevance, with accompanying methods in PDF format.
The data is carefully curated and reviewed by experts, ensuring reliable compound identification. Wiley collaborates with major MS vendors, supporting multiple instruments and formats for seamless workflow integration.
The MMHW library is trusted worldwide for compound analysis and verification in:
The 2nd edition adds 550+ new datasets, including designer drugs, cannabinoids, opioids, stimulants, and more.
Available in KnowItAll and NIST formats, this library remains a critical resource for accurate, sensitive, and selective LC-HR-MS/MS screening.
Search compound coverage at compoundsearch.com.


