171543-66-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 171543-66-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,5,4 and 3 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 171543-66:
(8*1)+(7*7)+(6*1)+(5*5)+(4*4)+(3*3)+(2*6)+(1*6)=131
131 % 10 = 1
So 171543-66-1 is a valid CAS Registry Number.