维他命D2二氧化硫加合物

(7Z)-Vitamin D2

3(R)-(tert-butyldimethylsilyloxy)-20(S)-formyl-9,10-secopregna-5(Z),7(E),10(19)-triene

20(R),3(R)-(tert-butyldimethylsilyloxy)-20-(3'-cyclopropyl-3'-oxoprop-1'(E)-enyl)-9,10-secopregna-5(Z),7(E),10(19)-triene

3(S)-tert-butyldimethylsilyloxy-20(S)-formyl-9,10-secoprega-5,7(E),10(19)-triene