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15544-91-9

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15544-91-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 15544-91-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,5,4 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 15544-91:
(7*1)+(6*5)+(5*5)+(4*4)+(3*4)+(2*9)+(1*1)=109
109 % 10 = 9
So 15544-91-9 is a valid CAS Registry Number.

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