221122-99-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221122-99-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,1,2 and 2 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 221122-99:
(8*2)+(7*2)+(6*1)+(5*1)+(4*2)+(3*2)+(2*9)+(1*9)=82
82 % 10 = 2
So 221122-99-2 is a valid CAS Registry Number.