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4-acetyl-5-benzyloxy-indole-2-carboxylic acid ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

31720-92-0

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31720-92-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31720-92-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,7,2 and 0 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 31720-92:
(7*3)+(6*1)+(5*7)+(4*2)+(3*0)+(2*9)+(1*2)=90
90 % 10 = 0
So 31720-92-0 is a valid CAS Registry Number.

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