LinKine FITC Labeling Kit

Fluorescein isothiocyanate (FITC) is a derivative of  fluorescein used in wide-ranging applications including flow cytometry. FITC is the original fluorescein molecule functionalized with an isothiocyanate reactive group (-N=C=S), replacing a hydrogen atom on the bottom ring of the structure. This derivative is reactive towards nucleophiles including amine and sulfhydryl groups on proteins. FITC has excitation and emission spectrum peak wavelengths of approximately 492 nm/520 nm, giving it a green color.