99989-82-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99989-82-9 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 9 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 99989-82:
(7*9)+(6*9)+(5*9)+(4*8)+(3*9)+(2*8)+(1*2)=239
239 % 10 = 9
So 99989-82-9 is a valid CAS Registry Number.