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cyclobutane-1r,2c,3c,4t-tetracarboxylic acid tetramethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

31351-41-4

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31351-41-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31351-41-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,3,5 and 1 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 31351-41:
(7*3)+(6*1)+(5*3)+(4*5)+(3*1)+(2*4)+(1*1)=74
74 % 10 = 4
So 31351-41-4 is a valid CAS Registry Number.

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