3,20-Pregnanedione
Structural Formula Vector Image
Title: 3,20-Pregnanedione
CAS Registry Number: 128-23-4
CAS Name: (5b)-Pregnane-3,20-dione
Molecular Formula: C21H32O2
Molecular Weight: 316.48
Percent Composition: C 79.70%, H 10.19%, O 10.11%
Literature References: From pregnancy urine of mares. Prepn from other steroids: Butenandt, Ber. 63, 659 (1930); Butenandt, Fleischer, Ber. 68, 2094 (1935); Marker et al., J. Am. Chem. Soc. 59, 1595 (1937); Shoppee, Reichstein, Helv. Chim. Acta 24, 356 (1941); US 2160719; US 2352852; US 2323276; US 2229818.
Properties: Needles from dil alc, mp 123°. Insol in water. Freely sol in the usual organic solvents.
Melting point: mp 123°
 
Derivative Type: Dioxime
Molecular Formula: C21H34N2O2
Molecular Weight: 346.51
Percent Composition: C 72.79%, H 9.89%, N 8.08%, O 9.23%
Properties: Dec above 250°.

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