4,6-Dichloropyridazine-3-carboxylic acid is primarily used as an intermediate in the synthesis of various pharmaceuticals and agrochemicals. Its structure allows for further chemical modifications, making it valuable in creating compounds with potential biological activity. In pharmaceutical research, it is often utilized to develop molecules that can act as inhibitors or modulators for specific enzymes or receptors. In the agrochemical industry, it serves as a building block for creating pesticides or herbicides, where its derivatives may exhibit effective pest control properties. Additionally, it is employed in organic synthesis for constructing complex heterocyclic compounds, which are essential in medicinal chemistry and material science.