80691-88-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 80691-88-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,6,9 and 1 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 80691-88:
(7*8)+(6*0)+(5*6)+(4*9)+(3*1)+(2*8)+(1*8)=149
149 % 10 = 9
So 80691-88-9 is a valid CAS Registry Number.