Pyrene-PEG-FITC

Synonyms: Pyrene-PEG-Fluorescein

Pyrene-PEG-FITC, with a pyrene and a FTIC dye at each end of the molecular chain, is a fluorescent heterofunctional PEG derivative. It can label proteins, antibodies, peptides, nucleic acids or particles. Pyrene is a unique fluorescent dye with an exceptionally long excited state lifetime (>100 ns). The long excited state lifetime of this dye allows it to be used in time-resolved fluorescent immunoassays to detect oxygen in cells and lipid vesicles. FITC is a commonly used biological fluorescent tracer for staining cells, tissues, biomarkers or nanoparticles. It has peak absorption or excitation at 494 nm and maximum emission at 521 nm. Heterobifunctional PEG can be attached to different molecules or materials to extend the richness of different molecular combinations.