Used as a key intermediate in the synthesis of agrochemicals and pharmaceuticals, particularly in the production of herbicides and plant growth regulators. Its aldehyde functionality and chlorine substituent make it valuable in coupling reactions and heterocycle formation. Commonly employed in the development of sulfonylurea herbicides due to its ability to form critical carbon-nitrogen bonds in triazine or pyrimidine ring systems. Also utilized in fine chemical synthesis for introducing methoxy-substituted aromatic aldehyde motifs in bioactive molecules.