89897-28-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89897-28-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,8,9 and 7 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 89897-28:
(7*8)+(6*9)+(5*8)+(4*9)+(3*7)+(2*2)+(1*8)=219
219 % 10 = 9
So 89897-28-9 is a valid CAS Registry Number.