28112-20-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28112-20-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,1,1 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 28112-20:
(7*2)+(6*8)+(5*1)+(4*1)+(3*2)+(2*2)+(1*0)=81
81 % 10 = 1
So 28112-20-1 is a valid CAS Registry Number.