Concanavalin A (Con A) is one of the most widely used lectins in cell biology. Our Alexa Fluor 350 conjugate of Con A exhibits the bright, blue fluorescence of the Alexa Fluor 350 dye (absorption/emission maxima ~346/442 nm). Alexa Fluor 350 Con A selectively binds to α-mannopyranosyl and α-glucopyranosyl residues.