Used primarily in bioconjugation and click chemistry applications, this compound is valuable for labeling biomolecules such as proteins, peptides, and nucleic acids. Its Dde group allows for selective protection and deprotection, enabling controlled reactions in complex biological systems. The biotin moiety facilitates affinity-based purification or detection using streptavidin-based systems, making it ideal for applications like pull-down assays, ELISA, or fluorescence imaging. The PEG4 spacer enhances solubility and reduces steric hindrance, improving accessibility during binding interactions. The DBCO group enables copper-free click chemistry, ensuring efficient and biocompatible conjugation with azide-containing molecules. This compound is particularly useful in proteomics, drug delivery, and targeted imaging studies.