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6-methoxy-3,4-dihydro-2H-benzo[b][1,4]oxazine; CAS No.: 58960-11-5;6-methoxy-3,4-dihydro-2H-benzo[b][1,4]oxazine. PROPERTIES: 6-methoxy-3,4-dihydro-2H-benzo[b][1,4]oxazine is a methoxy-substituted oxazine derivative with a molecular weight of 193.19 g/mol. This colorless liquid has a boiling point around 170-172 C at 760 mmHg. The molecule features a benzo[b][1,4]oxazine ring system with dihydro substitution at positions 3 and 4 and a methoxy group at position 6. It demonstrates moderate solubility in common organic solvents such as diethyl ether and chloroform but limited water solubility. Proper storage involves keeping in tightly sealed containers at room temperature, protected from light and moisture. Safety considerations include the methoxy group's potential to cause skin irritation and the oxazine ring's general toxicity. Standard laboratory safety protocols should be observed. APPLICATIONS: This compound primarily functions as a building block in the synthesis of agrochemicals and pharmaceuticals, where the methoxy-substituted oxazine structure provides essential binding affinity to target enzymes. In medicinal chemistry, it has been employed in developing antimicrobial agents targeting bacterial and fungal pathogens and has shown utility in creating herbicides with selective activity against grassy weeds. The oxazine-methoxy structure has also been explored in materials science for developing fluorescent probes, leveraging the electron-donating methoxy group to tune optical properties. These applications are supported by research published in the Journal of Medicinal Chemistry and Dyes and Pigments.