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(Z)-2-(2-Methyl-4-o-tolylazo-phenylamino)-but-2-enedioic acid diethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

56983-66-5

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56983-66-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56983-66-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,9,8 and 3 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 56983-66:
(7*5)+(6*6)+(5*9)+(4*8)+(3*3)+(2*6)+(1*6)=175
175 % 10 = 5
So 56983-66-5 is a valid CAS Registry Number.

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