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Pyrazine, 2-chloro-3-methyl-, 4-oxide is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

61689-41-6

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61689-41-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 61689-41-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,6,8 and 9 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 61689-41:
(7*6)+(6*1)+(5*6)+(4*8)+(3*9)+(2*4)+(1*1)=146
146 % 10 = 6
So 61689-41-6 is a valid CAS Registry Number.

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