Title: Allotetrahydrocortisone
CAS Registry Number: 547-77-3
CAS Name: (3a,5a)-3,17,21-Trihydroxy-pregnane-11,20-dione
Additional Names: Reichstein's substance Dehydro-C; 11-dehydro C; allopregnane-3a,17a,21-triol-11,20-dione
Molecular Formula: C21H32O5
Molecular Weight: 364.48
Percent Composition: C 69.20%, H 8.85%, O 21.95%
Literature References: Isoln from beef adrenals: v. Euw et al., Helv. Chim. Acta 41, 1516 (1958). Synthesis of the 3a,21-diacetate: Nagata et al., ibid. 42, 1399 (1959).
Properties: Rhombohedric leaflets from acetone + water, mp 212-214°.
Melting point: mp 212-214°
Derivative Type: 3a,21-Diacetate
Molecular Formula: C25H36O7
Molecular Weight: 448.55
Percent Composition: C 66.94%, H 8.09%, O 24.97%
Properties: Rhombohedric platelets, mp 225-227°; [a]D25 +94.2 ±1.5° (c = 1.45 in dioxane).
Melting point: mp 225-227°
Optical Rotation: [a]D25 +94.2 ±1.5° (c = 1.45 in dioxane)
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