99829-81-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99829-81-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,2 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 99829-81:
(7*9)+(6*9)+(5*8)+(4*2)+(3*9)+(2*8)+(1*1)=209
209 % 10 = 9
So 99829-81-9 is a valid CAS Registry Number.