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METLIN MS2 molecular standards database: a broad chemical and biological resource

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Fig. 1: The METLIN MS2 database.

Data availability

The data in the METLIN database are available at The data in other databases mentioned in this study were obtained from their websites (accessed in February 2020) or published papers: MoNA (, mzCloud (, GNPS (, HMDB ( and NIST 17 (


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This research was partially funded by US National Institutes of Health grants R35 GM130385 (G.S.), P30 MH062261 (G.S.), P01 DA026146 (G.S.) and U01 CA235493 (G.S.) and by Ecosystems and Networks Integrated with Genes and Molecular Assemblies (ENIGMA), a Scientific Focus Area Program at Lawrence Berkeley National Laboratory for the US Department of Energy, Office of Science, Office of Biological and Environmental Research, under contract number DE-AC02-05CH11231 (G.S.).

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J.X., C.G., H.P.B., B.W. and G.S. contributed to data collection, analysis, and manuscript writing. J.X. and C.G. share first authorship.

Corresponding author

Correspondence to Gary Siuzdak.

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The authors declare no competing interests.

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Editorial note: This article has been peer reviewed.

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Xue, J., Guijas, C., Benton, H.P. et al. METLIN MS2 molecular standards database: a broad chemical and biological resource. Nat Methods 17, 953–954 (2020).

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