743428-26-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 743428-26-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,3,4,2 and 8 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 743428-26:
(8*7)+(7*4)+(6*3)+(5*4)+(4*2)+(3*8)+(2*2)+(1*6)=164
164 % 10 = 4
So 743428-26-4 is a valid CAS Registry Number.