title: [Studies on the purity of Chinese megestrol acetate: separation and identification of epimeric isomers of 6-hydroxy-6-methyl-17 alpha-acetoxy-progesterone].
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D006908:Hydroxyprogesterones / Q000302:isolation & purification*; D008535:Megestrol / Q000032:analysis*; D013237:Stereoisomerism
chemical_list: D006908:Hydroxyprogesterones; C051434:6-hydroxy-6-methyl-17-acetoxyprogesterone; D008535:Megestrol