英文别名(8S,9S,10R,14S)-13-Ethyl-11-methylene-2,3,7,8,9,10,11,12,13,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-17(6H)-one; Desogestrel Related Compound D; Desogestrel impurity C; 13b-Ethyl-11-methylenegon-4-en-17-one; 13-Ethyl-11-methylene-gon-4-en-17-one; Desogestrel InterMediates; 11-methylene-13-ethyl-gon-4-ene-17-one; 18-methyl-11-methylene-4-estren-17-one; 13-ethyl-11-methylengon-4-ene; Desogestrel Impurity 3 
