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7-Dehydrodesmosterol
Names
	IUPAC name Cholesta-5,7,24-trien-3β-ol
	Systematic IUPAC name (1R,3aR,7S,9aR,9bS,11aR)-9a,11a-Dimethyl-1-[(2R)-6-methylhept-5-en-2-yl]-2,3,3a,6,7,8,9,9a,9b,10,11,11a-dodecahydro-1H-cyclopenta[a]phenanthren-7-ol
	Other names 24-Dehydroprovitamin D3
Identifiers
CAS Number	143982-69-8 ;
3D model (JSmol)	Interactive image; Interactive image;
ChEBI	CHEBI:27910 ;
ChemSpider	389458 ;
PubChem CID	440558;
CompTox Dashboard (EPA)	DTXSID801028219 ;
	InChI InChI=1S/C27H42O/c1-18(2)7-6-8-19(3)23-11-12-24-22-10-9-20-17-21(28)13-15-26(20,4)25(22)14-16-27(23,24)5/h7,9-10,19,21,23-25,28H,6,8,11-17H2,1-5H3/t19-,21+,23-,24+,25+,26+,27-/m1/s1 Key: RUSSPKPUXDSHNC-DDPQNLDTSA-N ; InChI=1/C27H42O/c1-18(2)7-6-8-19(3)23-11-12-24-22-10-9-20-17-21(28)13-15-26(20,4)25(22)14-16-27(23,24)5/h7,9-10,19,21,23-25,28H,6,8,11-17H2,1-5H3/t19-,21+,23-,24+,25+,26+,27-/m1/s1 Key: RUSSPKPUXDSHNC-DDPQNLDTBA;
	SMILES C[C@H](CCC=C(C)C)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3C2=CC=C4[C@@]3(CC[C@@H](C4)O)C)C; O[C@@H]4C/C3=C/C=C1\[C@H](CC[C@]2([C@H]1CC[C@@H]2[C@H](C)CCC=C(C)C)C)[C@@]3(C)CC4;
Properties
Chemical formula	C27H42O
Molar mass	382.62 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

7-Dehydrodesmosterol (or cholesta-5,7,24-trien-3-beta-ol) is a cholesterol intermediate.^[1]

References

^ Nowaczyk, MJM; Waye, JS (2001). "The Smith-Lemli-Opitz syndrome: A novel metabolic way of understanding developmental biology, embryogenesis, and dysmorphology". Clinical Genetics. 59 (6): 375–86. doi:10.1034/j.1399-0004.2001.590601.x. PMID 11453964. S2CID 9146017.