CF®DI dye hydrazide could be used to react with aldehyde or ketone groups from protein carbonylation. CF®DI dyes are designed to match for charge and molecular weight for 2D DIGE platform. • Orange fluorescent CF®555DI has excitation/emission at 547/572 nm. • Far-red fluorescent CF®647DI has excitation/emission at 639/668 nm. • Green fluorescent CF®488DI has excitation/emission at 483/508 nm. • Far-red fluorescent CF®660DI dye has excitation/emission at 661/703 nm. • Near-infrared fluorescent CF®680DI dye has excitation/emission at 676/711 nm. • 405 nm-excitable green fluorescent CF®430 dye has excitation/emission at 426/498 nm. • 405 nm-excitable green fluorescent CF®440 dye has excitation/emission at 440/515 nm.