Used primarily as an intermediate in the synthesis of pharmaceuticals and agrochemicals. Its reactivity allows for selective substitution of chlorine atoms, enabling the construction of complex heterocyclic systems. Commonly employed in the development of herbicides and plant growth regulators due to its ability to mimic or interfere with natural hormones in plants. Also utilized in research settings for the preparation of functionalized quinazoline derivatives with potential biological activity, including antimicrobial and anticancer properties.