156571-46-9 2H-1-Benzopyran-3-carboxamide, 7-(diethylmino)-N-(2-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)ethyl)-2-oxo- Mdcc fluorophore N-(2-(1-Maleimidyl)ethyl)-7-(diethylamino)coumarin-3-carboxamide