Category
Levonorgestrel
CAS Number
Levonorgestrel STD-797-63-7: IMP-V-14009-70-2: IMP-W-155683-59-3
Molecular Formula
Levonorgestrel STD-C21H28O2: IMP-V-C22H28O2: IMP-W-C21H24O2
Molecular Weight
Levonorgestrel STD-312.45: IMP-V-324.46: IMP-W-308.42
Synonym

Levonorgestrel STD-(17alpha)-13-Ethyl-17-hydroxy-18,19-dinorpregn-4-en-20-yn-3-one; 13-Ethyl-17-hydroxy-18,19-dinor-17α-pregn-4-en-20-yn-3-one; (8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-17-hydroxy-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one; Etonogestrel Impurity G (EP/BP); 17-Ethynyl-18-methyl-19-nortestosterone; (17α)-13-Ethyl-17-hydroxy -18,19-dinorpregn-4-en-20-yn-3-one; Levonorgestrel; D-Norgestrel; Dexnorgestrel; Levonelle; Levonova; Microlut; Microval; Norgeston; (8R,9S,10R,13S,14S,17R)-13-Ethyl-17-ethynyl-17-hydroxy-1,2,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-3H-cyclopenta[a]phenanthren-3-one; 18,19-Dinorpregn-4-en-20-yn-3-one, 13-ethyl-17-hydroxy-, (17α)-(−)-; (−)-13-Ethyl-17-hydroxy-18,19-dinor-17α-pregn-4-en-20-yn-3-one (USP)

Levonorgestrel-EP-Impurity-V-(8R,9S,13S,14S,17R)-13-ethyl-17-ethynyl-3-methoxy-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-ol

Levonorgestrel-EP-Impurity-W-(13S,14S,17R)-13-Ethyl-17-ethynyl-17-hydroxy-1,2,4,11,12,13,14,15,16,17-decahydro-3H-cyclopenta[a]phenanthren-3-one

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Levonorgestrel for System Suitability 2 CRS is a certified reference substance used as a secondary standard in analytical testing to further validate chromatographic system performance. It helps ensure accurate retention time, resolution, and peak shape, confirming the system’s reliability and reproducibility for analyzing levonorgestrel in pharmaceutical products.