Furo[3,4-b]pyridine-5(7H)-one,7-[4-(diethylaMino)-2-hexyloxy)phenyl]-7-(1-ethyl-2-Methyl-1H-indol-3-yl)-;MB5;3-(4-Diethylamino-2-hexyloxyphenyl)-3-(2-methyl-1-ethylindol-3-yl)-4-azaphthalide;Yamada Blue 203;Yamamoto Blue 203;BLUE 203;4-b]pyridin-5(7H)-one, 7-[4-(diethylamino)-2-(hexyloxy)phenyl]-7-(1-ethyl-2-methyl-1H-indol-3-yl)-Furo[3;7-[4-(diethylamino)-2-hexoxyphenyl]-7-(1-ethyl-2-methylindol-3-yl)furo[3,4-b]pyridin-5-one