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643744-96-1

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643744-96-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 643744-96-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,3,7,4 and 4 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 643744-96:
(8*6)+(7*4)+(6*3)+(5*7)+(4*4)+(3*4)+(2*9)+(1*6)=181
181 % 10 = 1
So 643744-96-1 is a valid CAS Registry Number.

643744-96-1Downstream Products

643744-96-1Relevant articles and documents

Environmentally friendly and efficient: Iron-mediated reduction of 3-methyl-5-aryl-1,2,4-oxadiazoles to benzamidines

Sendzik, Martin,Hui, Hon C.

, p. 8697 - 8700 (2007/10/03)

A new synthetic method is described for the mild and selective reduction of 3-methyl-5-aryl-1,2,4-oxadiazoles to amidines employing iron powder in aqueous medium. Its application is demonstrated in the synthesis of 1, a potent and selective urokinase-type plasminogen activator (uPA) inhibitor.

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