843-81-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 843-81-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,4 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 843-81:
(5*8)+(4*4)+(3*3)+(2*8)+(1*1)=82
82 % 10 = 2
So 843-81-2 is a valid CAS Registry Number.