| EINECS = 200-352-7 | PubChem = | SMILES = CC(C)[C@@H](C)C=C[C@@H](C)[C@H]1CC[C@H]2C3=CC=C4C[C@@H](O)CC[C@]4(C)[C@H]3CC[C@]12C | InChI=1/C28H44O/c1-18(2)19(3)7-8-20(4)24-11-12-25-23-10-9-21-17-22(29)13-15-27(21,5)26(23)14-16-28(24,25)6/h7-10,18-20,22,24-26,29H,11-17H2,1-6H3/b8-7+/t19-,20+,22-,24+,25-,26-,27-,28+/m0/s1 | MeSHName = Ergosterol }} | Section2 = | Section3 = }} Ergosterol (ergosta-5,7,22-trien-3β-ol), a sterol,'s a biological precursor (a provitamin) to Vitamin D2. It's turned… (More on Ergosterol)