94237-40-8

Pregn-4-ene-3,20-dione, 21,21'-[phosphinicobis(oxy)]bis[11,17-dihydroxy-, monosodium salt, (11β)-(11'β)-, compd. with (11β)-11,17,21-trihydroxypregn-4-ene-3,20-dione (1:1)