16518-89-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16518-89-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,5,1 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 16518-89:
(7*1)+(6*6)+(5*5)+(4*1)+(3*8)+(2*8)+(1*9)=121
121 % 10 = 1
So 16518-89-1 is a valid CAS Registry Number.