1-Oxo-25-hydroxyprevitamin D3

(2S,3R)-2-[(R)-2-(tert-Butyl-dimethyl-silanyloxy)-5-trimethylsilanyl-pent-4-ynyl]-3-iodomethyl-oxirane

((2S,3S)-3-((R)-2-((tert-butyldimethylsilyl)oxy)-5-(trimethylsilyl)pent-4-yn-1-yl)oxiran-2-yl)methanol

[4'R,5'R-(1S-cis)]-(+)-4',5'-dimethylspiro[bicyclo[3.1.0]hexane-2,2'-[1,3]dioxolane]-1-methanol