What are the physical and chemical properties of 3-Oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine-6-carboxylic acid (CAS: 337463-89-5)?

3-Oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine-6-carboxylic acid is a white to off-white crystalline solid with a molecular weight of approximately 248.23 g/mol. It has low water solubility and moderate solubility in organic solvents like methanol and dichloromethane. The compound is relatively stable but can react with strong bases and acids. It is used in organic synthesis as a key intermediate in the preparation of pharmaceuticals and polymers.