115484-65-6
(17Ξ)-3α,11,20-triacetoxy-5β-pregna-9(11),17(20)-diene
→
111584-17-9
4β-bromo-17-hydroxy-5β-pregnane-3,11,20-trione
1882-82-2
17Alpha-羟基孕甾-4-烯-3,11,20-三酮