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17837-57-9

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17837-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17837-57-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,8,3 and 7 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 17837-57:
(7*1)+(6*7)+(5*8)+(4*3)+(3*7)+(2*5)+(1*7)=139
139 % 10 = 9
So 17837-57-9 is a valid CAS Registry Number.

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