1816-79-1 6-beta,16-alpha-Dimethylpregn-4-ene-3,20-dione 6-beta,16-alpha-Dimethylprogesterone NSC 103266 Pregn-4-ene-3,20-dione, 6,16-dimethyl-, (6-beta,16-alpha)- Pregn-4-ene-3,20-dione, 6,16-dimethyl-, (6beta,16alpha)- (9CI) Pregn-4-ene-3,20-dione, 6-beta,16-alpha-dimethyl- Pregn-4-ene-3,20-dione, 6beta,16alpha-dimethyl- (8CI)