4-(2,6-dimethylquinolinium-1-yl)butane-1-sulfonate 、 4-[2-{(1E,3E,5E)-4-[acetyl(phenyl)amino]hexa-1,3,5-trienyl}-1-(5-carboxypentyl)-5,7-difluoro-3-methyl-3H-indolium-3-yl]butane-1-sulfonate 在
potassium acetate 作用下,
生成 4-[(2E)-2-{(2E,4E,6E)-7-[1-(5-carboxypentyl)-5,7-difluoro-3-methyl-3-(4-sulfobutyl)-3H-indolium-2-yl]hepta-2,4,6-trienylidene}-6-methylquinolin-1(2H)-yl]butane-1-sulfonate