Identification Common Name 4a-Methyl-5a-cholesta-8,24-dien-3-one Class Small Molecule Description 4a-Methyl-5a-cholesta-8,24-dien-3-one is an intermediate in the Cholesterol biosynthesis pathway, in a reaction catalyzed by the enzyme 3-keto-steroid reductase [EC 1.1.1.270]. (MetaCyc Pathway: cholesterol biosynthesis). Contaminant Sources Contaminant Type Not Available Chemical Structure Synonyms Value Source (4alpha,5alpha)-4-Methylcholesta-8,24-dien-3-one ChEBI 3-Keto-4alpha-methyl-zymosterol ChEBI 3-Keto-4alpha-methylzymosterol ChEBI (4a,5a)-4-Methylcholesta-8,24-dien-3-one Generator (4Α,5α)-4-methylcholesta-8,24-dien-3-one Generator 3-Keto-4a-methyl-zymosterol Generator 3-Keto-4α-methyl-zymosterol Generator 3-Keto-4a-methylzymosterol Generator 3-Keto-4α-methylzymosterol Generator 4alpha-Methyl-5alpha-cholesta-8,24-dien-3-one HMDB 4alpha-Methyl-(5alpha)-cholesta-8,24-dien-3-one ChEBI 4a-Methyl-(5a)-cholesta-8,24-dien-3-one Generator 4Α-methyl-(5α)-cholesta-8,24-dien-3-one Generator
Chemical Formula C28 H44 O Average Molecular Mass 396.648 g/mol Monoisotopic Mass 396.339 g/mol CAS Registry Number 7377-73-3 IUPAC Name (2S,6S,7S,11R,14R,15R)-2,6,15-trimethyl-14-[(2R)-6-methylhept-5-en-2-yl]tetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-1(10)-en-5-one Traditional Name (2S,6S,7S,11R,14R,15R)-2,6,15-trimethyl-14-[(2R)-6-methylhept-5-en-2-yl]tetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-1(10)-en-5-one SMILES [H][C@@]1(CC[C@@]2([H])C3=C(CC[C@]12C)[C@@]1(C)CCC(=O)[C@@H](C)[C@]1([H])CC3)[C@H](C)CCC=C(C)C InChI Identifier InChI=1S/C28H44O/c1-18(2)8-7-9-19(3)22-12-13-24-21-10-11-23-20(4)26(29)15-17-28(23,6)25(21)14-16-27(22,24)5/h8,19-20,22-24H,7,9-17H2,1-6H3/t19-,20+,22-,23+,24+,27-,28+/m1/s1 InChI Key DBPZYKHQDWKORQ-SINUOACOSA-N