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4,5-Bis-(2-methoxyanilino)-2-dicyanmethylen-cyclopent-4-en-1,3-dion is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

84557-40-4

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84557-40-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84557-40-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,5,5 and 7 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 84557-40:
(7*8)+(6*4)+(5*5)+(4*5)+(3*7)+(2*4)+(1*0)=154
154 % 10 = 4
So 84557-40-4 is a valid CAS Registry Number.

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