99985-97-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99985-97-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,9,8 and 5 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 99985-97:
(7*9)+(6*9)+(5*9)+(4*8)+(3*5)+(2*9)+(1*7)=234
234 % 10 = 4
So 99985-97-4 is a valid CAS Registry Number.