ELECTRON-DEFICIENT NITROGEN HETEROCYCLE-SUBSTITUTED FLUORESCEIN DYE

摘要

PPROBLEM TO BE SOLVED: To provide a fluorescein compound which is excitable by a laser beam having a long wavelength. PSOLUTION: The fluorescein compound has a xanthene structure and an electron-deficient nitrogen heterocyclic substituent and is, for example, a compound represented by formula (1). PCOPYRIGHT: (C)2008,JPO&INPIT