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1262139-19-4

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1262139-19-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1262139-19-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,6,2,1,3 and 9 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1262139-19:
(9*1)+(8*2)+(7*6)+(6*2)+(5*1)+(4*3)+(3*9)+(2*1)+(1*9)=134
134 % 10 = 4
So 1262139-19-4 is a valid CAS Registry Number.

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