ETHER SUBSTITUTED FLUORESCEIN COMPOUNDS AS FLUORESCERS AND QUENCHERS

摘要

ABSTRACT OF THE DISCLOSUREA chromogenic compound capable of donatingor accepting electronic energy, which is a 2,7-di(aliphatic chalcogen ether substituted) or4,5-di(aliphatic chalcogen ether substituted)-9-substituted-6-hydroxy-3H-xanthen-3-one, wherein chalcogenis of atomic number 8 to 16.