6449-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6449-18-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,4 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 6449-18:
(6*6)+(5*4)+(4*4)+(3*9)+(2*1)+(1*8)=109
109 % 10 = 9
So 6449-18-9 is a valid CAS Registry Number.