2440-98-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2440-98-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,4,4 and 0 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 2440-98:
(6*2)+(5*4)+(4*4)+(3*0)+(2*9)+(1*8)=74
74 % 10 = 4
So 2440-98-4 is a valid CAS Registry Number.