3β-[(t-butyldimethylsilyl)oxy]-20(S)-(propyl-23-oxo)-9,10-secopregna-5(E),7(E),10(19)-triene

1α-hydroxy-3β-[(t-butyldimethylsilyl)oxy]-20(S)-(n-propyl-23-oxo)-9,10-secopregna-5(E),7(E),10(19)-triene

1α,3β-bis[(t-butyldimethylsilyl)oxy]-20(S)-(n-propyl-23-oxo)-9,10-secopregna-5(Z),7(E),10(19)-triene

26,26,26,27,27,27-Hexafluoro-1alpha,25-dihydroxy-23-oxo-vitamin D3

1α,3β-bis[(t-butyldimethylsilyl)oxy]-23-oxo-9,10-secocholesta-5(Z),7(E),10(19)-trien-25-ol