220342-04-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220342-04-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,3,4 and 2 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 220342-04:
(8*2)+(7*2)+(6*0)+(5*3)+(4*4)+(3*2)+(2*0)+(1*4)=71
71 % 10 = 1
So 220342-04-1 is a valid CAS Registry Number.