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342643-51-0

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342643-51-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 342643-51-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,2,6,4 and 3 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 342643-51:
(8*3)+(7*4)+(6*2)+(5*6)+(4*4)+(3*3)+(2*5)+(1*1)=130
130 % 10 = 0
So 342643-51-0 is a valid CAS Registry Number.

342643-51-0Relevant articles and documents

A simple synthesis of hydroxyisoflavanones

Gouda,Grover

, p. 142 - 144 (2007/10/03)

The isoflavanoids 7-hydroxyisoflavanone 4a, 7-hydroxy-3′, 4′-dimethoxyisoflavanone 4b, 5, 7-dihydroxy-3′, 4′-dimethoxyisoflavanone 4c, 5, 7-dihydroxy-2′-methoxyisoflavanone 4d, 5, 7-dihydroxy-3′, 4′-dimethoxyisoflavanone 4e and 5, 7-dihydroxy-4′-methoxyisoflavanone 4f have been conveniently prepared by using paraforomaldehyde and diethylamine as a base.

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