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.
unii
Local identifiers in Unique Ingredient Identifier should match this
regular expression:
^[A-Z0-9]+$
Compact URIs (CURIEs) constructed from Unique Ingredient Identifier should match
this regular expression:
^unii:[A-Z0-9]+$
A summary of the relations in the Bioregistry schema can be found here.
The metaregistry provides mappings between the Bioregistry and other registries. There are 5 mappings to external registries for this resource with 3 unique external prefixes.
Registry Name | Registry Metaprefix | External Prefix | Curate |
---|---|---|---|
BioContext | biocontext |
UNII
|
|
CHEMINF | cheminf |
000563
|
|
Identifiers.org | miriam |
unii
|
|
N2T | n2t |
unii
|
|
Wikidata | wikidata |
P652
|
Providers are various services that resolve CURIEs to URLs. The example CURIE
unii:3G6A5W338E
is used to demonstrate the provides available for
this resource. Generation of OLS and BioPortal URLs requires additional programmatic
logic beyond string formatting.
Additional providers curated in the Bioregistry are listed here.
Code | Name | URL |
---|---|---|
CURATOR_REVIEW |
UNII at U.S. Food and Drug Administration | http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=3G6A5W338E |