Dinosterol

Dinosterol
Names
	IUPAC name (22E)-4α,23-Dimethyl-5α-ergost-22-en-3β-ol
	Systematic IUPAC name (1R,3aS,3bS,5aS,6S,7S,9aR,9bS,11aR)-6,9a,11a-Trimethyl-1-[(2R,3E,5R)-4,5,6-trimethylhept-3-en-2-yl]hexadecahydro-1H-cyclopenta[a]phenanthren-7-ol
Identifiers
CAS Number	58670-63-6 ;
3D model (JSmol)	Interactive image;
ChemSpider	4945298 ;
PubChem CID	6441076;
UNII	91FGT6HJ59 ;
CompTox Dashboard (EPA)	DTXSID901030126 ;
	InChI InChI=1S/C30H52O/c1-18(2)21(5)19(3)17-20(4)24-11-12-26-23-9-10-25-22(6)28(31)14-16-30(25,8)27(23)13-15-29(24,26)7/h17-18,20-28,31H,9-16H2,1-8H3/b19-17+/t20-,21-,22+,23+,24-,25+,26+,27+,28+,29-,30+/m1/s1 Key: LPFIPZJIWTZLEY-DAABMGJCSA-N ; InChI=1/C30H52O/c1-18(2)21(5)19(3)17-20(4)24-11-12-26-23-9-10-25-22(6)28(31)14-16-30(25,8)27(23)13-15-29(24,26)7/h17-18,20-28,31H,9-16H2,1-8H3/b19-17+/t20-,21-,22+,23+,24-,25+,26+,27+,28+,29-,30+/m1/s1 Key: LPFIPZJIWTZLEY-DAABMGJCBY;
	SMILES O[C@H]3CC[C@@]4([C@@H]2[C@H]([C@@H]1CC[C@H]([C@@H](\C=C(/C)[C@H](C)C(C)C)C)[C@@]1(C)CC2)CC[C@H]4[C@@H]3C)C;
Properties
Chemical formula	C30H52O
Molar mass	428.745 g·mol−1
	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

Dinosterol (4α,23,24-trimethyl-5α-cholest-22E-en-3β-ol) is a 4α-methyl sterol that is produced by several genera of dinoflagellates and is rarely found in other classes of protists. The steroidal alkane, dinosterane, is the 'molecular fossil' of dinosterol, meaning that dinosterane has the same carbon skeleton as dinosterol, but lacks dinosterol's hydroxyl group and olefin functionality. As such, dinosterane is often used as a biomarker to identify the presence of dinoflagellates in sediments.