80642-03-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 80642-03-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,6,4 and 2 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 80642-03:
(7*8)+(6*0)+(5*6)+(4*4)+(3*2)+(2*0)+(1*3)=111
111 % 10 = 1
So 80642-03-1 is a valid CAS Registry Number.