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90031-91-7

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90031-91-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90031-91-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,0,3 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 90031-91:
(7*9)+(6*0)+(5*0)+(4*3)+(3*1)+(2*9)+(1*1)=97
97 % 10 = 7
So 90031-91-7 is a valid CAS Registry Number.

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