7289-58-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7289-58-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,2,8 and 9 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 7289-58:
(6*7)+(5*2)+(4*8)+(3*9)+(2*5)+(1*8)=129
129 % 10 = 9
So 7289-58-9 is a valid CAS Registry Number.