171979-71-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 171979-71-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,9,7 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 171979-71:
(8*1)+(7*7)+(6*1)+(5*9)+(4*7)+(3*9)+(2*7)+(1*1)=178
178 % 10 = 8
So 171979-71-8 is a valid CAS Registry Number.