Title: Allopregnan-20a-ol-3-one
CAS Registry Number: 516-59-6
CAS Name: (5a,20S)-20-Hydroxypregnan-3-one
Additional Names: 20a-hydroxy-5a-pregnan-3-one; 20a-hydroxy-3-oxo-5a-pregnane
Molecular Formula: C21H34O2
Molecular Weight: 318.49
Percent Composition: C 79.19%, H 10.76%, O 10.05%
Literature References: Prepn from funtumidine: Janot et al., Bull. Soc. Chim. Fr. 1960, 1669.
Properties: Crystals, mp 179°. [a]D +36.6° (c = 0.8 in chloroform).
Melting point: mp 179°
Optical Rotation: [a]D +36.6° (c = 0.8 in chloroform)
Derivative Type: Acetate
Molecular Formula: C23H36O3
Molecular Weight: 360.53
Percent Composition: C 76.62%, H 10.06%, O 13.31%
Properties: Crystals from ethanol, mp 155°. [a]D +24° (c = 1.5 in chloroform).
Melting point: mp 155°
Optical Rotation: [a]D +24° (c = 1.5 in chloroform)