89166-80-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89166-80-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,1,6 and 6 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 89166-80:
(7*8)+(6*9)+(5*1)+(4*6)+(3*6)+(2*8)+(1*0)=173
173 % 10 = 3
So 89166-80-3 is a valid CAS Registry Number.