4-Azidobenzoic acid is widely utilized in research focused on:

• Organic Synthesis: This compound serves as a versatile building block in organic chemistry, facilitating the synthesis of various azide-containing compounds, which are crucial for creating complex molecules.
• Click Chemistry: Its azide functional group makes it ideal for click chemistry applications, allowing for efficient and selective reactions with alkynes, which are valuable in drug development and materials science.
• Bioconjugation: In biochemistry, it is used to label biomolecules, enabling the study of protein interactions and cellular processes, which is essential for developing new therapeutic strategies.
• Polymer Chemistry: The compound can be incorporated into polymer matrices to create materials with specific properties, such as enhanced reactivity or functionality, beneficial in the development of smart materials.
• Photochemistry: It can be utilized in photochemical reactions, where its azide group can undergo transformations upon light exposure, making it useful in creating light-responsive materials.