This chemical is widely used in bioconjugation and labeling applications, particularly in the field of biochemical research. It serves as a versatile linker for attaching fluorescent dyes to biomolecules such as proteins, peptides, or nucleic acids, enabling their visualization and tracking in complex biological systems. The azide group allows for efficient click chemistry reactions, such as with alkyne-modified molecules, ensuring precise and stable conjugation. Its PEG3 spacer enhances solubility and reduces steric hindrance, making it ideal for applications in fluorescence microscopy, flow cytometry, and other imaging techniques. Additionally, it is valuable in the development of diagnostic probes and drug delivery systems, where targeted labeling and detection are critical.