1635-20-7 3beta,11alpha,17-Trihydroxy-16alpha-methyl-5alpha-pregnan-20-one 5alpha-Pregnan-20-one, 3beta,11alpha,17-trihydroxy-16alpha-methyl- EINECS 216-658-9 Pregnan-20-one, 3,11,17-trihydroxy-16-methyl-, (3beta,5alpha,11alpha,16alpha)-