Bioorthogonal chemistry refers to chemical reactions that can occur inside living organisms without interfering with native biochemical processes. These reactions are designed to be selective and efficient, allowing scientists to study biological systems in real-time. This field is particularly useful in biomedical research and drug development, as it enables the labeling and tracking of biomolecules. For example, click chemistry is a common bioorthogonal reaction that facilitates the attachment of probes to specific targets, aiding in the visualization of cellular processes and the development of targeted therapies.