5516-66-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5516-66-5 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 6 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 5516-66:
(6*5)+(5*5)+(4*1)+(3*6)+(2*6)+(1*6)=95
95 % 10 = 5
So 5516-66-5 is a valid CAS Registry Number.