6409-43-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6409-43-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,0 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 6409-43:
(6*6)+(5*4)+(4*0)+(3*9)+(2*4)+(1*3)=94
94 % 10 = 4
So 6409-43-4 is a valid CAS Registry Number.