171285-71-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 171285-71-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,2,8 and 5 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 171285-71:
(8*1)+(7*7)+(6*1)+(5*2)+(4*8)+(3*5)+(2*7)+(1*1)=135
135 % 10 = 5
So 171285-71-5 is a valid CAS Registry Number.