4022-22-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4022-22-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,0,2 and 2 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 4022-22:
(6*4)+(5*0)+(4*2)+(3*2)+(2*2)+(1*2)=44
44 % 10 = 4
So 4022-22-4 is a valid CAS Registry Number.