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664320-84-7

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664320-84-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 664320-84-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,4,3,2 and 0 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 664320-84:
(8*6)+(7*6)+(6*4)+(5*3)+(4*2)+(3*0)+(2*8)+(1*4)=157
157 % 10 = 7
So 664320-84-7 is a valid CAS Registry Number.

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