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165820-15-5

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165820-15-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 165820-15-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,5,8,2 and 0 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 165820-15:
(8*1)+(7*6)+(6*5)+(5*8)+(4*2)+(3*0)+(2*1)+(1*5)=135
135 % 10 = 5
So 165820-15-5 is a valid CAS Registry Number.

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