19802-80-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19802-80-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,8,0 and 2 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 19802-80:
(7*1)+(6*9)+(5*8)+(4*0)+(3*2)+(2*8)+(1*0)=123
123 % 10 = 3
So 19802-80-3 is a valid CAS Registry Number.