24S-Hydroxycholesterol

24S-Hydroxycholesterol
Names
	IUPAC name (24S)-Cholest-5-ene-3β,24-diol
	Systematic IUPAC name (1R,3aS,3bS,7S,9aR,9bS,11aR)-1-[(2R,5S)-5-Hydroxy-6-methylheptan-2-yl]-9a,11a-dimethyl-2,3,3a,3b,4,6,7,8,9,9a,9b,10,11,11a-tetradecahydro-1H-cyclopenta[a]phenanthren-7-ol
	Other names cerebrosterol
Identifiers
CAS Number	474-73-7;
3D model (JSmol)	Interactive image;
Beilstein Reference	3218472
ChEBI	CHEBI:34310;
ChEMBL	ChEMBL171804;
ChemSpider	108790;
KEGG	C13550;
PubChem CID	121948;
UNII	47IMW63S3F;
CompTox Dashboard (EPA)	DTXSID101313419 ;
	InChI InChI=1S/C27H46O2/c1-17(2)25(29)11-6-18(3)22-9-10-23-21-8-7-19-16-20(28)12-14-26(19,4)24(21)13-15-27(22,23)5/h7,17-18,20-25,28-29H,6,8-16H2,1-5H3/t18-,20+,21+,22-,23+,24+,25+,26+,27-/m1/s1 Key: IOWMKBFJCNLRTC-XWXSNNQWSA-N;
	SMILES C[C@H](CC[C@@H](C(C)C)O)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CC=C4[C@@]3(CC[C@@H](C4)O)C)C;
Properties
Chemical formula	C27H46O2
Molar mass	402.663 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

24S-Hydroxycholesterol (24S-HC), also known as cholest-5-ene-3,24-diol or cerebrosterol, is an endogenous oxysterol produced by neurons in the brain to maintain cholesterol homeostasis. It was discovered in 1953 by Alberto Ercoli, S. Di Frisco, and Pietro de Ruggieri, who first isolated the molecule in the horse brain and then demonstrated its presence in the human brain.