42818-11-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42818-11-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,8,1 and 8 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 42818-11:
(7*4)+(6*2)+(5*8)+(4*1)+(3*8)+(2*1)+(1*1)=111
111 % 10 = 1
So 42818-11-1 is a valid CAS Registry Number.