6,17-Dimethyl-6-dehydroprogesterone 6,17-Dimethylpregna-4,6-diene-3,20-dione 977-79-7 AY 62022 AY-62022 Ay 13615S Colpo Colpro Colprone Etogyn Medrogesterone Medrogestone Metrogestone NSC123018 Pregna-4,6-diene-3,20-dione, 6,17-dimethyl- Prothil