3642-85-1 6A-METHYL-PREGN-4-ENE-3,11,20-TRIONE 6alpha-Methyl-11-oxoprogesterone 6alpha-Methylpregn-4-ene-3,11,20-trione FDA 0070 NSC 17256 NSC-17256 Pregn-4-ene-3,11,20-trione, 6-methyl-, (6alpha)- (9CI) Pregn-4-ene-3,11,20-trione, 6alpha-methyl- (8CI) Progesterone, 6alpha-methyl-11-oxo- SKI 22936 U 7654