2809-11-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2809-11-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,8,0 and 9 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2809-11:
(6*2)+(5*8)+(4*0)+(3*9)+(2*1)+(1*1)=82
82 % 10 = 2
So 2809-11-2 is a valid CAS Registry Number.