1 ROS N,N'-tetramethyl-rosamine 1.000 2 A1EI4 [9-(2-carboxyphenyl)-6-(dimethylamino)xanthen-3-ylidene]-dimethyl-azanium 0.897 3 323 2-[3,6-bis(dimethylamino)xanthen-9-yl]-5-methanoyl-benzoate 0.839 4 FH8 5-carboxy methylrhodamine 0.812 5 V8C 5-aminocarbonyl-2-[3-(dimethylamino)-6-dimethylazaniumylidene-xanthen-9-yl]benzoate 0.812 6 RHB N-[9-(2-carboxyphenyl)-6-(diethylamino)-3h-xanthen-3-ylidene]-N-ethylethanaminium 0.788 7 RHO Tetramethylrhodamine-5-maleimide 0.722 8 AO Acridine orange 0.704