This chemical is widely used in bioconjugation and labeling applications due to its unique combination of PEG linkers, azide functionality, and Cy5 dye. The PEG chains enhance solubility and reduce nonspecific interactions, making it suitable for use in biological systems. The azide group allows for click chemistry reactions, particularly with alkyne-containing molecules, enabling precise and efficient conjugation. The Cy5 dye provides strong fluorescence in the red to near-infrared range, making it ideal for imaging and detection in fluorescence microscopy, flow cytometry, and in vivo imaging. It is commonly employed in the study of cellular processes, protein-protein interactions, and drug delivery systems. Additionally, its dual PEGylation ensures minimal immunogenicity and prolonged circulation in biological environments, making it valuable for therapeutic and diagnostic applications.