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420787-55-9

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420787-55-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 420787-55-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,0,7,8 and 7 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 420787-55:
(8*4)+(7*2)+(6*0)+(5*7)+(4*8)+(3*7)+(2*5)+(1*5)=149
149 % 10 = 9
So 420787-55-9 is a valid CAS Registry Number.

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