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5434-81-1

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5434-81-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5434-81-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,4,3 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5434-81:
(6*5)+(5*4)+(4*3)+(3*4)+(2*8)+(1*1)=91
91 % 10 = 1
So 5434-81-1 is a valid CAS Registry Number.
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