28202-60-0 Crotonaldehyde, cyclic 14,17-acetal with 11beta,14,17,21-tetrahydroxypregn-4-ene-3,20-dione 21-acetate Nicocortonide acetate Pregn-4-ene-3,20-dione, 11beta,14,17,21-tetrahydroxy-, cyclic 14,17-acetal with crotonaldehyde, 21-acetate Pregn-4-ene-3,20-dione, 21-(acetyloxy)-14,17-(2-butenylidenebis(oxy))-11-hydroxy-, (11beta)-