171917-81-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 171917-81-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,9,1 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 171917-81:
(8*1)+(7*7)+(6*1)+(5*9)+(4*1)+(3*7)+(2*8)+(1*1)=150
150 % 10 = 0
So 171917-81-0 is a valid CAS Registry Number.