13-ETHYL-17-HYDROXY-18,19-DINORPREGNA-4,8(14)-DIEN-20-YN-3-ONE, (17.ALPHA.)-
UNII 59LXR6H1IT

Substance Identification & Data

This profile provides standardized clinical and technical data for 13-ethyl-17-hydroxy-18,19-dinorpregna-4,8(14)-dien-20-yn-3-one, (17.alpha.)-, uniquely identified by the FDA Unique Ingredient Identifier (UNII) 59LXR6H1IT.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 1260525-53-8 and the RxNorm Concept ID (RxCUI) N/A. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.

FDA UNII Code
59LXR6H1IT
CAS Registry Number
1260525-53-8
RxNorm Concept ID
N/A

Detailed Substance Profile

Preferred Name
13-ETHYL-17-HYDROXY-18,19-DINORPREGNA-4,8(14)-DIEN-20-YN-3-ONE, (17.ALPHA.)-
Official standardized name for this substance within the FDA UNII nomenclature system.
InChIKey
C21H26O2
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
PIGNQOCLJHWTGZ-JWWGGVBKSA-N
Line notation for describing the chemical structure and connectivity of atoms.
PubChem CID
Unique identification number in the NCBI database of chemical substances.
Substance Type
chemical
ISO 11238 classification category (e.g., Chemical, Polymer, Protein).
Ingredient Role
C1(CC[C@@]2([C@]3(CC[C@@]4([C@@](CCC4=C3CCC2=C1)(C#C)O)CC)[H])[H])=O

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for 13-ethyl-17-hydroxy-18,19-dinorpregna-4,8(14)-dien-20-yn-3-one, (17.alpha.)-. 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.

Common Names & Synonyms

.DELTA.8(14)-LEVONORGESTREL
LEVONORGESTREL IMPURITY A [EP IMPURITY]

Systematic Nomenclature

13-ETHYL-17-HYDROXY-18,19-DINOR-17.ALPHA.-PREGNA-4,8(14)-DIEN-20-YN-3-ONE
13-ETHYL-17-HYDROXY-18,19-DINORPREGNA-4,8(14)-DIEN-20-YN-3-ONE, (17.ALPHA.)-
18,19-DINORPREGNA-4,8(14)-DIEN-20-YN-3-ONE, 13-ETHYL-17-HYDROXY-, (17.ALPHA.)-