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640768-50-9

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640768-50-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 640768-50-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,0,7,6 and 8 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 640768-50:
(8*6)+(7*4)+(6*0)+(5*7)+(4*6)+(3*8)+(2*5)+(1*0)=169
169 % 10 = 9
So 640768-50-9 is a valid CAS Registry Number.

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