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566-29-0

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566-29-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 566-29-0 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,6 and 6 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 566-29:
(5*5)+(4*6)+(3*6)+(2*2)+(1*9)=80
80 % 10 = 0
So 566-29-0 is a valid CAS Registry Number.

566-29-0Downstream Products

566-29-0Relevant articles and documents

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Fieser,Nakanishi,Huang

, p. 4719 (1953)

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A New Route to Steroid Ring-c Aromatization from 7-Oxygenated Steroids

Anastasia, Mario,Ciuffreda, Pierangela,Puppo, Marina Del,Fiecchi, Alberto

, p. 587 - 590 (2007/10/02)

3β-Acetoxy-5α-cholesta-8,14-dien-7β-ol (3), 3β-acetoxy-8α,9α-epoxy-5α-cholestan-7β-ol (6a), and 3β-acetoxy-8α,14α-epoxy-5α-cholestan-7β-ol (8a) have been aromatized with hydrochloric acid in ethanol to afford a 9:1 mixture of 12-methyl-18-nor-5α,17β(H)-cholesta-8,11,13-trien-3β-ol (4) and 12-methyl-18-nor-5α-cholesta-8,11,13-trien-3β-ol (5).By the same acidic treatment 3β-acetoxy-8α,9α-epoxy-5α-cholestan-7α-ol (6c) generates 3β-hydroxy-5α-cholest-8-en-7-one (7a), and 3β-acetoxy-8α,14α-epoxy-5α-cholestan-7α-ol (8c) affords 3β-hydroxy-5α-cholest-8(14)-en-7-one (9a) accompanied by the previously unobserved 3β-hydroxy-5α-cholest-8(14)-en-15-one (10a).

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