Concanavalin A (Con A) is one of the most widely used lectins in cell biology. Our Alexa Fluor® 488 conjugate of Con A exhibits the bright, green fluorescence of the Alexa Fluor® 488 dye (absorption/emission maxima ~495/519 nm). Alexa Fluor® 488 Con A selectively binds to a-mannopyranosyl and a-glucopyranosyl residues.