Patent ID: 7553336

Claim:
A cationic naphthalene derivative selected from the group consisting of 4-{(E)-[(1,3-diketo-2,3-dihydro-1H-benzo[de]isoquinolin-6-yl)imino]methyl}-1-(2-hydroxyethyl)pyridinium bromide, 4-{[(E)-[2-{4-[ethyl(2-hydroxyethyl)amino]phenyl}-(1,3-diketo-2,3-dihydro-1H-benzo[de]isoquinolin-6-yl)imino]methyl}-1-methylpyridinium methylsulfate, 1-(2-hydroxyethyl)-4-{(E)-(2-methyl-1,3-diketo-2,3-dihydro-1H-benzo[de]isoquinolin-6-yl)iminomethyl}pyridinium bromide, 1-methyl-4-{(E)-[(2-methyl-1,3-diketo-2,3-dihydro-1H-benzo[de]isoquinolin-6-yl)imino]methyl}pyridinium methylsulfate, 1-methyl-4-{(E)-[(2-methyl-1,3-diketo-2,3-dihydro-1H-benzo[de]isoquinolin-6-yl)imino]methyl}quinolinium methylsulfate, 4-[(E)-({2-[2-hydroxy-1-(hydroxymethyl)ethyl]-1,3-diketo-2,3-dihydro-1H-benzo[de]isoquinolin-6-yl}imino)methylpyridinium methylsulfate, 4-((E)-{[2-(3,4-dichlorophenyl)-1,3-diketo-2,3-dihydro-1 H-benzo[de]isoquinolin-6-yl]imino}methyl)-1-(2-hydroxyethyl)pyridinium bromide and 2-[(E)-({2-[2-hydroxy-1-(hydroxymethyl)ethyl]-1,3-diketo-2,3-dihydro-1H-benzo[de]isoquinolin-6-yl}imino)methyl]-3-methyl-1,3-thiazol-3-ium methylsulfate.