171-17-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 171-17-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,7 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 171-17:
(5*1)+(4*7)+(3*1)+(2*1)+(1*7)=45
45 % 10 = 5
So 171-17-5 is a valid CAS Registry Number.