Biotin-PEG2-Acid is widely used in bioconjugation and biochemical research due to its unique properties. The biotin moiety allows for strong and specific binding to avidin or streptavidin, making it valuable in applications like affinity purification, immunoassays, and protein labeling. The PEG2 spacer enhances solubility and reduces steric hindrance, improving the efficiency of biotinylation reactions. This compound is particularly useful in the development of diagnostic tools, drug delivery systems, and targeted therapies. Its ability to link biomolecules with high specificity and stability makes it a critical component in advanced research and biotechnological applications.