Used primarily as an intermediate in organic synthesis, especially in the pharmaceutical and agrochemical industries. It reacts readily with amines to form amide bonds, making it valuable in constructing nitrogen-containing heterocyclic compounds. Commonly employed in the preparation of bioactive molecules, including drug candidates that target neurological disorders and inflammatory conditions. Also utilized in the synthesis of functional polymers and dyes due to its aromatic and reactive nature. Its ability to modify pyrrole rings allows for fine-tuning of electronic properties in materials science applications.