17,21-Diacetoxyprogesterone 17,21-Dihydroxypregn-4-ene-3,20-dione 17,21-di(acetate) 17,21-Dihydroxypregn-4-ene-3,20-dione diacetate 1807-15-4 4-08-00-02914 (Beilstein Handbook Reference) BRN 2193141 EINECS 217-307-2 NSC 15482 Pregn-4-ene-3,20-dione, 17,21-dihydroxy-, diacetate