| Synonyms: | 3-Oxopregn-4-ene-20-carbaldehyde;20-Formylpregn-4-en-3-one;Pregn-4-ene-20-carboxaldehyde, 3-oxo-;20-hydroxypregn-4-ene-3-one (BA);Progesterone EP Impurity I (Mixture of Diastereomers);2-((8S,9S,10R,13S,14S,17R)-10,13-dimethyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)propanal;20-formylpregn-4-en-3-onee;(20RS)-20-methyl-3-oxopregn-4-en-21-al |