FDA official logo
GSRS logo
PFDA official logo

Learn how to search

Here you will learn how to use the UNII search bar on this website. If you are unsure of the UNII code that you are looking for, we provide a wildcard search to help find what you are looking for.

Search by wildcard:

  • diazepam

    The name diazepam gives suggestions as you type to select and then Go (search). DIAZEPAM is the FDA preferred substance name for this substance and the UNII is Q3JTX2Q7TU.

  • diaz*

    Using an asterisk at the end of a name allows truncation. You may retrieve salts and mixtures that start with diazepam.

  • *diazepam*

    Using asterisks at the front and end of the generic name may retrieve mixtures where diazepam is not at the beginning of a name.

  • *azepam

    Using asterisks at the front of a name may retrieve related names.

  • *leaf*

    Using asterisks at the front and end of a biological substance name will retrieve compounds that share this data in one of their names.

Search by UNII code:

  • Q3JTX2Q7TU

    UNII codes may be searched By UNII. You will be prompted with suggestions as you type. UNIIs are also present as names.