97984-89-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97984-89-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,9,8 and 4 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 97984-89:
(7*9)+(6*7)+(5*9)+(4*8)+(3*4)+(2*8)+(1*9)=219
219 % 10 = 9
So 97984-89-9 is a valid CAS Registry Number.