可的松

四氢可的松

22-acetoxy-3,11-dioxo-23,24-dinor-5β-chol-17(20)ξ-ene-21-nitrile

(3alpha,5beta)-3,17-二羟基-孕甾烷-11,20-二酮

21-bromo-3α,17-dihydroxy-5β-pregnane-11,20-dione