2-Chloro-3-iodobenzoic acid is primarily used in organic synthesis as a versatile intermediate. It serves as a building block in the preparation of more complex molecules, particularly in pharmaceutical research. The compound is often employed in the development of active pharmaceutical ingredients (APIs) due to its halogenated structure, which allows for further functionalization. It is also utilized in the synthesis of agrochemicals, where its unique structure contributes to the creation of compounds with specific biological activities. Additionally, it finds application in material science for the development of specialized polymers and organic electronic materials. Its halogen atoms make it a useful precursor in cross-coupling reactions, which are fundamental in constructing complex organic frameworks.