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642983-97-9

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642983-97-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 642983-97-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,2,9,8 and 3 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 642983-97:
(8*6)+(7*4)+(6*2)+(5*9)+(4*8)+(3*3)+(2*9)+(1*7)=199
199 % 10 = 9
So 642983-97-9 is a valid CAS Registry Number.

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