57331-14-3 6alpha,9-Difluoro-11beta,17,21-trihydroxypregna-1,4-diene-3,20-dione 21-(dihydrogen phosphate) EINECS 260-683-8 Pregna-1,4-diene-3,20-dione, 6,9-difluoro-11,17-dihydroxy-21-(phosphonooxy)-, (6alpha,11beta)-