98999-80-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 98999-80-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,9,9 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 98999-80:
(7*9)+(6*8)+(5*9)+(4*9)+(3*9)+(2*8)+(1*0)=235
235 % 10 = 5
So 98999-80-5 is a valid CAS Registry Number.