What industries use 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 primarily used in the pharmaceutical and polymer industries. It serves as a key intermediate in the synthesis of various drug molecules and is also used in the development of advanced polymers for electronic and optoelectronic applications. Its versatility in organic synthesis makes it a valuable compound in multiple sectors.