MELENGESTROL ACETATE
UNII 4W5HDS3936

Substance Identification & Data

This profile provides standardized clinical and technical data for Melengestrol Acetate, uniquely identified by the FDA Unique Ingredient Identifier (UNII) 4W5HDS3936.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 2919-66-6 and the RxNorm Concept ID (RxCUI) 1537798. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.

FDA UNII Code

4W5HDS3936

CAS Registry Number

2919-66-6

RxNorm Concept ID

1537798

Detailed Substance Profile

Preferred Name

MELENGESTROL ACETATE

Official standardized name for this substance within the FDA UNII nomenclature system.

Molecular Formula

4W5HDS3936

The specific atomic composition represented as a molecular structure string.

InChIKey

C25H32O4

International Chemical Identifier digital signature for unique molecular identification.

SMILES String

UDKABVSQKJNZBH-DWNQPYOZSA-N

Line notation for describing the chemical structure and connectivity of atoms.

NCI Thesaurus

C74577

National Cancer Institute reference terminology for clinical and research data.

PubChem CID

250948

Unique identification number in the NCBI database of chemical substances.

Substance Type

chemical

ISO 11238 classification category (e.g., Chemical, Polymer, Protein).

Ingredient Role

[C@]12([C@@](C(=C)C[C@]1([C@@]3(C=C(C)C=4[C@@]([C@@]3([H])CC2)(CCC(C4)=O)C)[H])[H])(OC(=O)C)C(=O)C)C

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for Melengestrol Acetate. 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.