22100-11-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22100-11-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,1,0 and 0 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 22100-11:
(7*2)+(6*2)+(5*1)+(4*0)+(3*0)+(2*1)+(1*1)=34
34 % 10 = 4
So 22100-11-4 is a valid CAS Registry Number.