5589-89-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5589-89-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,8 and 9 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 5589-89:
(6*5)+(5*5)+(4*8)+(3*9)+(2*8)+(1*9)=139
139 % 10 = 9
So 5589-89-9 is a valid CAS Registry Number.