FITC peg biotin (fluorescein polyethylene glycol biotin)

FITC peg biotin (fluorescein polyethylene glycol biotin) is a linear heterogenic peg reagent with fluorescein dye and biotin groups. Fluorescein, commonly known as FITC, is a fluorescent tracer commonly used in biology to stain cells, tissues, biomarkers or nanoparticles. It has peak absorption or excitation at 494nm and maximum emission at 521nm. Fluorescent peg is usually used for PEGylation to label or label biomolecules and nanoparticles with dyes and tracers.