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2,3-Bis-(diphenyl-phosphinoyl)-N,N'-di-p-tolyl-succinamide is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

31683-59-7

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31683-59-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31683-59-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,6,8 and 3 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 31683-59:
(7*3)+(6*1)+(5*6)+(4*8)+(3*3)+(2*5)+(1*9)=117
117 % 10 = 7
So 31683-59-7 is a valid CAS Registry Number.

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