26516-15-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 26516-15-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,5,1 and 6 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 26516-15:
(7*2)+(6*6)+(5*5)+(4*1)+(3*6)+(2*1)+(1*5)=104
104 % 10 = 4
So 26516-15-4 is a valid CAS Registry Number.