171979-68-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 171979-68-3 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, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 171979-68:
(8*1)+(7*7)+(6*1)+(5*9)+(4*7)+(3*9)+(2*6)+(1*8)=183
183 % 10 = 3
So 171979-68-3 is a valid CAS Registry Number.