28121-12-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28121-12-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,1,2 and 1 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 28121-12:
(7*2)+(6*8)+(5*1)+(4*2)+(3*1)+(2*1)+(1*2)=82
82 % 10 = 2
So 28121-12-2 is a valid CAS Registry Number.