2489-38-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2489-38-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,4,8 and 9 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 2489-38:
(6*2)+(5*4)+(4*8)+(3*9)+(2*3)+(1*8)=105
105 % 10 = 5
So 2489-38-5 is a valid CAS Registry Number.