1 323 2-[3,6-bis(dimethylamino)xanthen-9-yl]-5-methanoyl-benzoate 1.000 2 FH8 5-carboxy methylrhodamine 0.969 3 V8C 5-aminocarbonyl-2-[3-(dimethylamino)-6-dimethylazaniumylidene-xanthen-9-yl]benzoate 0.969 4 A1EI4 [9-(2-carboxyphenyl)-6-(dimethylamino)xanthen-3-ylidene]-dimethyl-azanium 0.935 5 ROS N,N'-tetramethyl-rosamine 0.839 6 RHB N-[9-(2-carboxyphenyl)-6-(diethylamino)-3h-xanthen-3-ylidene]-N-ethylethanaminium 0.829 7 RHO Tetramethylrhodamine-5-maleimide 0.763