The Wiley spectral libraries are offering millions of spectra for confident compound identification across various techniques, including LCMS.

LC-HR-MS/MS Library of Drugs,
Poisons and Their Metabolites
Hans H.Maurer, Markus R. Meyer, Andreas G. Helfer, Armin A. Weber
ISBN 978-3-527-34338-6
Heighten screening sensitivity with metabolite-based LC-HR-MS/MS Library
Developed by toxicologist Hans H. Maurer and his team, the Maurer/Meyer/Helfer/Weber LC-HR-MS/MS Library of Drugs, Poisons, and Their Metabolites consists of 5,006 spectra, over 2,000 parent drug or poisons, and over 3,000 of their metabolites or artifacts in over 95 compound classification groups. This metabolite-based library helps minimize the risk of false negative LC-MS results.
LC-high-resolution tandem mass spectrometry (LC-HR-MS/MS) provides various advantages for screening approaches, such as higher versatility, sensitivity, and specificity. This library is the basis for metabolite-based screening procedures described for various drug classes. Data fields within the library include compound name, empirical formula, exact molecular mass, exact precursor mass, polarity, retention time, CAS number, and also category.
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Wiley Registry of Tandem Mass Spectral Data, MS for ID
Herbert Oberacher, March 2012
ISBN 978-1-118-03744-7
High Mass-Accuracy LC-MS/MS Library
The Wiley Registry of Tandem Mass Spectral Data: MS for ID consists of 12,048 positive and negative mode spectra of over 1,000 compounds of interestfor forensics, toxicology, and pathology. Covering areas such as illicit drugs, pharmaceutical compounds, pesticides, and other small bioorganic molecules, this database is a reliable tool for the identification of small molecules with specificity usually about 95% and sensitivity exceeding 92%. Each compound was carefully measured by the Oberacher team at the Institute of Legal Medicine, Innsbruck Medical University. A series of controlled conditions ensured accurate, reliable, and reproducible search results in a variety of settings. The library demonstrates high transferability to a variety of tandem mass spectrometric instruments. The Wiley Registry of Tandem Mass Spectral Data: MS for ID comes bundled with one of the most accurate search algorithms developed for LC-MS/MS providing fast, reproducible, and also stable search results.
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