99838-98-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99838-98-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,3 and 8 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 99838-98:
(7*9)+(6*9)+(5*8)+(4*3)+(3*8)+(2*9)+(1*8)=219
219 % 10 = 9
So 99838-98-9 is a valid CAS Registry Number.