English Synonyms: 17-(Acetyloxy)-6-chloropregna-4,6-diene-3,20-dione;17-Acetoxy-6-chloro-6-dehydroprogesterone;17-alpha-Acetoxy-6-chloro-6,7-dehydroprogesterone;17-alpha-acetoxy-6-chloro-6-dehydroprogesterone;17alpha-Acetoxy-6-chloro-6-dehydroprogesterone;17-alpha-acetoxy-6-chloropregna-4,6-diene-3,20-dione;17alpha-Acetoxy-6-chloropregna-4,6-diene-3,20-dione;20-dione,17-(acetoxy)-6-chloro-pregna-6-diene-3