Category
Levonorgestrel
CAS Number
176254-10-7
Molecular Formula
C22H30O2
Molecular Weight
326.47
Purity

Not less than-95.0%

Synonym

(17α)-13-Ethyl-3-methoxy-18,19-dinorpregna-3,5-dien-20-yn-17-ol; (8R,9S,10R,13S,14S,17R)-13-Ethyl-17-ethynyl-3-methoxy-2,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-ol; 13-ethyl-3-methoxy-18,19-dinor-17α-pregna-3,5-dien-20-yn-17-ol; 3-Methoxy levonorgestrel 3,5-diene; 13-Ethyl-3-methoxy-18,19-dinor-17α-pregn-3,5-dien-20-yn-17-ol

Keywords
Impurities
Fine Chemicals
Pharmaceutical Standards
Intermediates
Levonorgestrel EP Impurity S

Levonorgestrel EP Impurity S is an officially listed impurity in the European Pharmacopoeia (EP) monograph for levonorgestrel. It is used as a reference standard in analytical techniques such as HPLC for impurity profiling, method validation, and stability testing. Monitoring and controlling this impurity ensures that levonorgestrel drug substances and finished products comply with regulatory quality and safety standards.