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Articles tagged with “spl-substance-identifier”

FDA GSRS UNII: Substance Master Crosswalk for SPL and IDMP

A 2026 guide to the FDA GSRS UNII: precisionFDA and openFDA ingestion, class-specific matching rules, SPL and IDMP mapping limits, with 167,385 record counts and test cases.

30 min read

10/31/2026

fda gsrs unii unii lookup fda global substance registration system gsrs api unii idmp mapping iso 11238 spl substance identifier precisionfda unii search substance master data