4348-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4348-89-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,3,4 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 4348-89:
(6*4)+(5*3)+(4*4)+(3*8)+(2*8)+(1*9)=104
104 % 10 = 4
So 4348-89-4 is a valid CAS Registry Number.