5023-49-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5023-49-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,0,2 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 5023-49:
(6*5)+(5*0)+(4*2)+(3*3)+(2*4)+(1*9)=64
64 % 10 = 4
So 5023-49-4 is a valid CAS Registry Number.