99689-88-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99689-88-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,6,8 and 9 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 99689-88:
(7*9)+(6*9)+(5*6)+(4*8)+(3*9)+(2*8)+(1*8)=230
230 % 10 = 0
So 99689-88-0 is a valid CAS Registry Number.