4022-19-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4022-19-9 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, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 4022-19:
(6*4)+(5*0)+(4*2)+(3*2)+(2*1)+(1*9)=49
49 % 10 = 9
So 4022-19-9 is a valid CAS Registry Number.