Select any link to see items in a related category.
more general categories information about this item 10. Biology and Chemistry 10. Biology and Chemistry Biology and Chemistry (144) Biochemistry (39) description: Unique Ingredient Identifier (UNII) links to descriptive information in US FDA Substance Registration System (SRS). SRS defines substances in regulated products, such as ingredients in drug and biologic products. AFDSI created a UNII ontology to integrate FDA UNII and UNII-related data. complete name: US FDA Unique Ingredient Identifier