Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of non-steroidal anti-inflammatory drugs (NSAIDs) and other bioactive molecules. Its aldehyde and amide functional groups allow for versatile chemical modifications, enabling the formation of Schiff bases, reduction to amines, or use in cyclization reactions to build heterocyclic structures. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to its ability to mimic aromatic and ether-containing motifs found in drug-like molecules. Also utilized in the preparation of enzyme inhibitors and receptor ligands where diphenylamide and methoxybenzaldehyde scaffolds are pharmacologically relevant.