220420-05-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220420-05-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,4,2 and 0 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 220420-05:
(8*2)+(7*2)+(6*0)+(5*4)+(4*2)+(3*0)+(2*0)+(1*5)=63
63 % 10 = 3
So 220420-05-3 is a valid CAS Registry Number.