Title: Norcholanic Acid
CAS Registry Number: 511-18-2
CAS Name: (5b)-24-Norcholan-23-oic acid
Molecular Formula: C23H38O2
Molecular Weight: 346.55
Percent Composition: C 79.71%, H 11.05%, O 9.23%
Literature References: Prepn from ethyl cholanate: Wieland et al., Z. Physiol. Chem. 161, 80 (1926); from 3,7-diketonorcholanic acid: Windaus, van Schoor, ibid. 173, 312 (1928); from 12-ketonorcholanic acid: Cook, Haslewood, J. Chem. Soc. 1934, 428; from 3a,23-dihydroxycholanic acid: Yanuka et al., Tetrahedron Lett. 1968, 1725.
Properties: Needles from acetic acid, mp 177°.
Melting point: mp 177°
Derivative Type: Methyl ester
Molecular Formula: C24H40O2
Molecular Weight: 360.57
Percent Composition: C 79.94%, H 11.18%, O 8.87%
Properties: Needles from methanol, mp 74°.
Melting point: mp 74°
Derivative Type: Ethyl ester
Molecular Formula: C25H42O2
Molecular Weight: 374.60
Percent Composition: C 80.16%, H 11.30%, O 8.54%
Properties: Prisms from alcohol, mp 67°.
Melting point: mp 67°
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