NDC Product
Human Prescription DrugLetrozole NDC 50090-3474
- Generic Name
- Letrozole
- Dosage Form
- Tablet, Film Coated
- Route
- Oral
- Marketing
- ANDA
Active Listing
LETROZOLE
UNII 7LKK855W8I
Substance Identification & Data
This profile provides standardized clinical and technical data for Letrozole, uniquely identified by the FDA Unique Ingredient Identifier (UNII) 7LKK855W8I.
Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 112809-51-5 and the RxNorm Concept ID (RxCUI) 72965. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.
Detailed Substance Profile
Preferred Name
LETROZOLE
Official standardized name for this substance within the FDA UNII nomenclature system.
Molecular Formula
7LKK855W8I
The specific atomic composition represented as a molecular structure string.
InChIKey
C17H11N5 International Chemical Identifier digital signature for unique molecular identification.
SMILES String
HPJKCIUCZWXJDR-UHFFFAOYSA-N Line notation for describing the chemical structure and connectivity of atoms.
INN ID
7118
Sequential identifier assigned via the WHO International Nonproprietary Name program.
USAN ID
EE-48
Identifier assigned by the United States Adopted Names Council.
Substance Type
chemical
ISO 11238 classification category (e.g., Chemical, Polymer, Protein).
Ingredient Role
n1(ncnc1)C(c2ccc(C#N)cc2)c3ccc(C#N)cc3
Synonyms and Nomenclature
This section provides a complete list of nomenclature and identifier mappings for Letrozole. Identifiers are organized into official regulatory terms, commercial trade names, and technical systematic synonyms used to ensure accurate identification across clinical pharmaceutical databases, regulatory filings, and electronic health records.
FDA Official Name
LETROZOLE
Common Names & Synonyms
LETROZOLE [EP IMPURITY]
LETROZOLE [EP MONOGRAPH]
LETROZOLE [HSDB]
LETROZOLE [INN]
LETROZOLE [JAN]
LETROZOLE [MART.]
LETROZOLE [MI]
LETROZOLE [ORANGE BOOK]
LETROZOLE [USAN]
LETROZOLE [USP MONOGRAPH]
LETROZOLE [USP-RS]
LETROZOLE [WHO-DD]
Brand / Trade Names
FEMARA
KISQALI FEMARA CO-PACK COMPONENT LETROZOLE
Systematic Nomenclature
4,4'-(1H-1,2,4-TRIAZOL-1-YLMETHYLENE)BIS(BENZONITRILE)
4,4'-(1H-1,2,4-TRIAZOL-1-YLMETHYLENE)DIBENZONITRILE
BENZONITRILE, 4,4'-(1H-1,2,4-TRIAZOL-1-YLMETHYLENE)BIS-
Technical Codes
CGS20267
CGS-20267
NSC-759652
NDC Products Containing LETROZOLE
This unique ingredient identifier is listed as an ingredient or substance in the following products in the NDC directory:
