5518-64-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5518-64-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,1 and 8 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 5518-64:
(6*5)+(5*5)+(4*1)+(3*8)+(2*6)+(1*4)=99
99 % 10 = 9
So 5518-64-9 is a valid CAS Registry Number.