Bromoacetamide-PEG3-C1-acid is widely utilized in bioconjugation and chemical biology research. Its primary application lies in the modification of proteins, peptides, and other biomolecules, where it serves as a linker to introduce functional groups or attach payloads. The bromoacetamide group allows for selective conjugation with thiol groups, making it particularly useful for targeting cysteine residues in proteins. This enables the creation of stable thioether bonds, which are crucial for designing antibody-drug conjugates (ADCs) or other targeted therapeutics. Additionally, the PEG3 spacer enhances solubility and reduces steric hindrance, improving the efficiency of conjugation reactions. This compound is also employed in the development of probes for imaging or diagnostic purposes, where precise and stable labeling of biomolecules is essential. Its versatility makes it a valuable tool in drug discovery, molecular imaging, and the study of protein interactions.