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56-77-9

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56-77-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56-77-9 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 5 and 6 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 56-77:
(4*5)+(3*6)+(2*7)+(1*7)=59
59 % 10 = 9
So 56-77-9 is a valid CAS Registry Number.

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