503423-64-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 503423-64-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,3,4,2 and 3 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 503423-64:
(8*5)+(7*0)+(6*3)+(5*4)+(4*2)+(3*3)+(2*6)+(1*4)=111
111 % 10 = 1
So 503423-64-1 is a valid CAS Registry Number.