89731-28-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89731-28-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,7,3 and 1 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 89731-28:
(7*8)+(6*9)+(5*7)+(4*3)+(3*1)+(2*2)+(1*8)=172
172 % 10 = 2
So 89731-28-2 is a valid CAS Registry Number.