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20840-11-3

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20840-11-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20840-11-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,8,4 and 0 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20840-11:
(7*2)+(6*0)+(5*8)+(4*4)+(3*0)+(2*1)+(1*1)=73
73 % 10 = 3
So 20840-11-3 is a valid CAS Registry Number.

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