18428-81-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18428-81-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,4,2 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 18428-81:
(7*1)+(6*8)+(5*4)+(4*2)+(3*8)+(2*8)+(1*1)=124
124 % 10 = 4
So 18428-81-4 is a valid CAS Registry Number.