19-Hydroxy-androst-4-ene-3,17-dione CAS 510-64-5

Usage: Intermediate of norethisterone and ethinylestradiol. Production method using acetic acid pregnenolone (5,16-pregnenol-3) β- Alcohol-20-one 3-acetate) as raw material, through hydroxylamine oximation of hydrochloric acid, rearrangement (dehydroepiandrosterone of acetic acid obtained from Chemicalbook), hydrolysis (HCl), addition, epoxidation, hydrolysis (removal of 3-acetyl), oxidation (3-hydroxy), elimination (removal of HCl), reduction, ring opening, etc.