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221045-17-6

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221045-17-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221045-17-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,0,4 and 5 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 221045-17:
(8*2)+(7*2)+(6*1)+(5*0)+(4*4)+(3*5)+(2*1)+(1*7)=76
76 % 10 = 6
So 221045-17-6 is a valid CAS Registry Number.

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