FITC-PEG-Acid, MW 3,400 is a chemical reagent featuring an FITC fluorophore and a carboxylic acid. FITC is a green fluorophore with excitation and emission maxima at 491 nm and 516 nm respectively. FITC-PEG conjugates see frequent use in fluorescence microscopy, immunohistochemistry and other in vivo research applications. Carboxylic acids are easily reactive towards amines and alcohols to form amides or esters respectively.
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