appears_in: []
depends_on: []
deprecated: false
description: The purpose of the joint FDA/USP Substance Registration System (SRS)
  is to support health information technology initiatives by generating unique ingredient
  identifiers (UNIIs) for substances in drugs, biologics, foods, and devices. The
  UNII is a non- proprietary, free, unique, unambiguous, non semantic, alphanumeric
  identifier based on a substance’s molecular structure and/or descriptive information.
example: 3G6A5W338E
homepage: https://precision.fda.gov/uniisearch
keywords: []
mappings:
  biocontext: UNII
  cheminf: '000563'
  miriam: unii
  n2t: unii
  wikidata: P652
name: Unique Ingredient Identifier
namespace_in_lui: false
pattern: ^[A-Z0-9]+$
preferred_prefix: unii
prefix: unii
providers: []
publications: []
synonyms: []
uri_format: https://precision.fda.gov/uniisearch/srs/unii/$1
