title: Conversion of calciferols to isotachysterols by trifluoroacetic acid.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002849:Chromatography, Gas; D003124:Colorimetry; D004872:Ergocalciferols; D004875:Ergosterol / Q000031:analogs & derivatives; D005463:Fluoroacetates; D008722:Methods; D012632:Secosteroids; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013261:Sterols; D013997:Time Factors
chemical_list: D004872:Ergocalciferols; D005463:Fluoroacetates; D012632:Secosteroids; D013261:Sterols; C002960:isotachysterol; D004875:Ergosterol