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-A-(9R,10R,13S,17R)-13-ethyl-17-ethynyl-17-hydroxy-1,2,6,7,9,10,11,12,15,16-decahydrocyclopenta[a]phenanthren-3-one
Levonorgestrel-EP-Impurity-H-(6beta,17alpha)-13-Ethyl-6,17-dihydroxy-18,19-dinorpregn-4-en-20-yn-3-one
Levonorgestrel-EP-Impurity-K-(8R,9S,10R,14S,17S)-13-ethyl-17-hydroxy-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta(a)phenanthren-3(2H)-one
Levonorgestrel-EP-Impurity-M-18,19-Dinorpregna-4,6-dien-20-yn-3-one,13-ethyl-17-hydroxy-,(17alpha)
Levonorgestrel-EP-Impurity-O-(5R,8R,9S,10R,13S,14S,17S)-13-ethyl-17-ethynyl-17-hydroxy-5-methoxyhexadecahydro-3H-cyclopenta[a]phenanthren-3-one
Levonorgestrel-EP-Impurity-S-13-ethyl-3-methoxy-18,19-dinor-17α-pregna-3,5-dien-20-yn-17-ol
