423120-28-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 423120-28-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,3,1,2 and 0 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 423120-28:
(8*4)+(7*2)+(6*3)+(5*1)+(4*2)+(3*0)+(2*2)+(1*8)=89
89 % 10 = 9
So 423120-28-9 is a valid CAS Registry Number.