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42556-67-2

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42556-67-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42556-67-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,5,5 and 6 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 42556-67:
(7*4)+(6*2)+(5*5)+(4*5)+(3*6)+(2*6)+(1*7)=122
122 % 10 = 2
So 42556-67-2 is a valid CAS Registry Number.

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