References of (3R,8S,9S,10R,13R,14S,17R)-10,
13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,
17-dodecahydro-1H-cyclopenta[a]phenanthren-3-ol
Title: Epicholesterol
CAS Registry Number: 474-77-1
CAS Name: (3a)-Cholest-5-en-3-ol
Molecular Formula: C27H46O
Molecular Weight: 386.65
Percent Composition: C 83.87%, H 11.99%, O 4.14%
Literature References: The 3a-hydroxy epimer of cholesterol. Prepd from 8-oxocholesteryl chloride or from cholest-5-en-3-one or by passing O2 into a soln of cholesteryl Mg chloride: Ruzicka, Goldberg,
Helv. Chim. Acta 19, 1407 (1936); Marker,
et al., J. Am. Chem. Soc. 58, 481 (1936); Marker,
US 2117355 (1938); Barnett
et al., J. Chem. Soc. 1940, 1390.
Properties: Crystals from alcohol, mp 141.5°. [a]D30 -35° (c = 1 in alcohol). Not precipited by digitonin.
Melting point: mp 141.5°
Optical Rotation: [a]D30 -35° (c = 1 in alcohol)
Derivative Type: Acetate
Molecular Formula: C29H48O2
Molecular Weight: 428.69
Percent Composition: C 81.25%, H 11.29%, O 7.46%
Properties: Crystals from methanol, mp 85°.
Melting point: mp 85°