Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in medicinal chemistry due to its ability to form stable heterocyclic structures that interact with biological targets. Commonly employed in the preparation of active pharmaceutical ingredients (APIs) where nitrogen-containing scaffolds are required for optimal binding to enzymes or receptors. Its protected ester form allows for selective deprotection and further functionalization in multi-step synthesis.