15516-68-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 15516-68-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,5,1 and 6 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 15516-68:
(7*1)+(6*5)+(5*5)+(4*1)+(3*6)+(2*6)+(1*8)=104
104 % 10 = 4
So 15516-68-4 is a valid CAS Registry Number.