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1-methyl-2-oxo-1,2-dihydroquinoline-3-carbaldehyde; CAS No.: 67735-60-8; 1-methyl-2-oxo-1,2-dihydroquinoline-3-carbaldehyde. PROPERTIES: 1-methyl-2-oxo-1,2-dihydroquinoline-3-carbaldehyde is a crystalline compound with molecular formula C10H7NO2, having a molar mass of approximately 177.17 g/mol. It demonstrates moderate solubility in water and good solubility in methanol and DMSO. Melting point determinations typically yield values between 155-159 C. Proper storage requires maintaining in airtight containers at room temperature, protected from moisture and strong reducing agents. Safety considerations identify it as causing skin irritation and serious eye damage. Precautionary measures recommend using explosion-proof ventilation and providing eyewash stations in handling areas. APPLICATIONS: This compound serves as a valuable intermediate in the synthesis of antidepressant medications, particularly those targeting monoamine oxidase (MAO) enzymes. Its aldehyde group at position 3 and methyl group at position 1 enable selective modification for constructing bioactive molecules. In materials science, it contributes to electroactive polymer development through controlled polymerization processes. The compound also supports research into metal ion chelators for analytical chemistry applications, with methodologies published in Journal of Medicinal Chemistry and related pharmaceutical patents, illustrating its significance in psychiatric medication design and materials innovation.