Alexa Fluor 647 Amine is a primary amine derivative of the bright far-red fluorescent dye Alexa Fluor 647, offering good water solubility and photostability. The amine functional group allows covalent labeling of proteins, peptides, and other biomolecules via carboxyl activation chemistry, providing efficient and stable conjugation. Alexa Fluor 647 amine is widely used for live-cell imaging, molecular tracking, and multicolor fluorescence analysis, with excitation/emission maxima around 651/672 nm.