Sulfo Cy5.5-hydrazide sodium

SulfoCy5.5-hydrazide sodium is a near-infrared fluorescent labeling reagent that specifically targets carbonyl groups via its hydrazide function, forming stable hydrazone bonds. It is widely applied for in vivo imaging and in vitro assays, including glycan and biomolecule tracking, due to its excellent water solubility and minimal nonspecific binding.