2-((6-甲氧基吡啶-3-基氨基)亚甲基)丙二酸二乙酯

4-Hydroxy-6-methoxy-[1,5]naphthyridine-3-carboxylic Acid Ethyl Ester

1,4-dihydro[1,5]naphthyridine-3-carboxylic acid ethyl ester