Synonyms: | (20R)-20-Methylpregna-4-ene-3,21-dione;Nsc9137;(2R)-2-[(8S,9S,10R,13S,14S,17R)-10,13-dimethyl-3-oxo-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl]propanal;Progesterone Impurity 20;Pregn-4-ene-20-carboxaldehyde, 3-oxo-, (20R)-;Phloretin Impurity 1 (Phlorizin);Progesterone Impurity 57;4-PREGNEN-3-ONE-20β-CARBOXALDEHYDE |