网站主页>>>项目整合精选>>>项目整合精选>>>Allopregnane-3 b ,20 b -diol CAS Registry Number: 516-53-0 别孕甾烷二醇

Allopregnane-3 b ,20 b -diol CAS Registry Number: 516-53-0 别孕甾烷二醇

CAS Name: (3b,5a,20R)-Pregnane-3,20-diol
Additional Names: 3b,20b-dihydroxy-5a-pregnane
Percent Composition: C 78.69%, H 11.32%, O 9.98%

📌 参考资料/链接：
Literature References: Progesterone metabolite. Isoln from pregnant mares' urine: Brooks et al., Biochem. J. 51, 694 (1952). Prepn by catalytic reduction of allopregnane-3,20-dione: Marker et al., GB 512940 (1939 to Parke, Davis); by hydrogenation of pregn-5-ene-3b-ol-20-one: Klyne, Barton, J. Am. Chem. Soc. 71, 1500 (1949); by hydrogenation of pregn-5-ene-3b,20b-diol: Klyne, Miller, J. Chem. Soc. 1950, 1972.

📄 详细内容

Properties: Leaflets from ethyl acetate + petr ether, mp 194.5-195.5°. [a]D +4.4° (c = 1.04 in chloroform).
Melting point: mp 194.5-195.5°
Optical Rotation: [a]D +4.4° (c = 1.04 in chloroform)
Derivative Type: Diacetate
Percent Composition: C 74.22%, H 9.97%, O 15.82%
Properties: Needles from ethyl acetate + petr ether, mp 141-142.5°. [a]D20 +21° (c = 1 in chloroform).
Melting point: mp 141-142.5°
Optical Rotation: [a]D20 +21° (c = 1 in chloroform)
Derivative Type: Dibenzoate
Percent Composition: C 79.51%, H 8.39%, O 12.10%
Properties: Crystals, mp 237.5-239°. [a]D20 -10.1° (c = 2.08 in chloroform).
Melting point: mp 237.5-239°
Optical Rotation: [a]D20 -10.1° (c = 2.08 in chloroform)
产品链接: 516-53-0››

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