15116-18-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 15116-18-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,1,1 and 6 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 15116-18:
(7*1)+(6*5)+(5*1)+(4*1)+(3*6)+(2*1)+(1*8)=74
74 % 10 = 4
So 15116-18-4 is a valid CAS Registry Number.