英文别名(20R)-3-Oxopregn-4-en-20-yl acetate; 20-Dihydroprogesterone Acetate; 20-Spdo; 20-Succinamylpregna-1,4-dien-3-one; Progesterone Impurity E ((20R)-3-Oxopregn-4-en-20-yl Acetate); Progesterone Impurity 5(Progesterone EP Impurity E); (R)-1-((8S,9S,10R,13S,14S,17S)-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)ethyl acetate; Progesterone EP IMP E; Pregn-4-en-3-one, 20-(acetyloxy)-, (20R)- 
