1816-78-0 6-alpha,16-alpha-Dimethylpregn-4-ene-3,20-dione 6-alpha,16-alpha-Dimethylprogesterone 6alpha,16alpha-Dimethylprogesterone BRN 2627932 NSC 80618 Pregn-4-ene-3,20-dione, 6,16-dimethyl-, (6alpha,16alpha)- (9CI) Pregn-4-ene-3,20-dione, 6-alpha,16-alpha-dimethyl- Pregn-4-ene-3,20-dione, 6alpha,16alpha-dimethyl- (8CI) RR 27112 RU 27112