英文别名
(9b,10a)-Pregna-4,6-diene-3,20-dione; (9beta,10alpha)-Pregna-4,6-diene-3,20-dione; .DELTA.6-Retroprogesterone; 10a-Isopregnenone; 6-Dehydro-9.beta.,10.alpha.-progesterone; 6-Dehydro-9b,10a-progesterone; 6-Dehydroretroprogesterone; 9b,10a-Pregna-4,6-diene-3,20-dione; 9beta,10alpha-Pregna-4,6-diene-3,20-dione (8CI); D6-Retroprogesterone; (9beta,10xi)-pregna-4,6-diene-3,20-dione