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CAS No 516-53-0 , Pregnane-3,20-diol, (3b,5a,20R)-

  • Name: Pregnane-3,20-diol, (3b,5a,20R)-
  • Synonyms: Allopregnane-3b,20b-diol; Pregnandiol III; 3b,20b-Dihydroxy-5a-pregnane;Pregnane-3,20-diol, (3b,5a,20R)-;5a-Pregnane-3b,20b-diol (8CI);5a-Pregnane-3b,20(R)-diol;
  • CAS Registry Number:
  • Flash Point: 191°C
  • Boiling Point: 435.9°Cat760mmHg
  • Density: 1.053g/cm3
  • Refractive index: 1.531
  • Flash Point: 191°C
  • EINECS: 208-223-7
  • Molecular Weight: 320.51
  • InChI: InChI=1/C21H36O2/c1-13(22)17-6-7-18-16-5-4-14-12-15(23)8-10-20(14,2)19(16)9-11-21(17,18)3/h13-19,22-23H,4-12H2,1-3H3/t13-,14+,15+,16+,17-,18+,19+,20+,21-/m1/s1
  • Molecular Formula: C21H36 O2
  • Molecular Structure:CAS No:516-53-0 Pregnane-3,20-diol, (3b,5a,20R)-

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516-53-0 ALLOPREGNANEDIOL(REAGENT / STANDARD GRADE)

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516-53-0 ALLOPREGNANEDIOL(RG)

  • ALLOPREGNANEDIOL(RG)5a-Pregnane-3b,20b-diol
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516-53-0 Allopregnandiol

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516-53-0 ALLOPREGNANDIOL

  • China Nanjing Chemlin Chemical Industry Co.,Ltd. [Manufacturer]
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References of Pregnane-3,20-diol, (3b,5a,20R)-
Title: Allopregnane-3b,20b-diol
CAS Registry Number: 516-53-0
CAS Name: (3b,5a,20R)-Pregnane-3,20-diol
Synonyms: 3b,20b-dihydroxy-5a-pregnane
Molecular Formula: C21H36O2
Molecular Weight: 320.51
Percent Composition: C 78.69%, H 11.32%, O 9.98%
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.
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
Molecular Formula: C25H40O4
Molecular Weight: 404.58
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
Molecular Formula: C35H44O4
Molecular Weight: 528.72
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)