220504-78-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220504-78-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,5,0 and 4 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 220504-78:
(8*2)+(7*2)+(6*0)+(5*5)+(4*0)+(3*4)+(2*7)+(1*8)=89
89 % 10 = 9
So 220504-78-9 is a valid CAS Registry Number.