197715-71-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 197715-71-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,7,1 and 5 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 197715-71:
(8*1)+(7*9)+(6*7)+(5*7)+(4*1)+(3*5)+(2*7)+(1*1)=182
182 % 10 = 2
So 197715-71-2 is a valid CAS Registry Number.