17171-22-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17171-22-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,1,7 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 17171-22:
(7*1)+(6*7)+(5*1)+(4*7)+(3*1)+(2*2)+(1*2)=91
91 % 10 = 1
So 17171-22-1 is a valid CAS Registry Number.