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 reactivity of the chloropyridazine ring, enabling coupling reactions to form more complex molecules. Its tert-butyl carbamate group acts as a protecting group for amines, allowing selective functionalization during multi-step syntheses. Commonly employed in research settings for designing bioactive molecules with potential antitumor and anti-inflammatory activities.