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 the presence of the chloropyridazine ring, which is known for its bioactivity. Commonly employed in the preparation of herbicides and plant growth regulators in agricultural chemistry. Its ester functionality allows for easy modification, making it valuable in structure-activity relationship (SAR) studies during drug discovery.