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234762-41-5

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234762-41-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 234762-41-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,4,7,6 and 2 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 234762-41:
(8*2)+(7*3)+(6*4)+(5*7)+(4*6)+(3*2)+(2*4)+(1*1)=135
135 % 10 = 5
So 234762-41-5 is a valid CAS Registry Number.

234762-41-5Relevant articles and documents

Synthesis and mutual transformations of naphthomethylenequinonimines derived from 11-methylene5a,6,7,9a-tetrahydronaphtho[l ',2' : 4,5]imidazo[l,2-a]pyridine

Verbitskii,Slabko,Kaminskii

, p. 1343 - 1347 (2007/10/03)

Base-catalyzed reactions of substituted 1,4-naphthomethyIenequinoneimines, derivatives of 1l-methylene-5a,6,7,9a-tetrahydronaphtho[1',2':4,5]imidazo[l,2-a]pyridine, with compounds containing an active methylene group result in exchange of the methylene fragments. This reaction is an example of a new direction of nucleophilic attack in methylenequinpid systems.

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