4531-89-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4531-89-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,5,3 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 4531-89:
(6*4)+(5*5)+(4*3)+(3*1)+(2*8)+(1*9)=89
89 % 10 = 9
So 4531-89-9 is a valid CAS Registry Number.