3-甲基-喹啉-2-甲酸

ethyl 3-formyl-4-oxido-1-oxoquinoxalin-1-ium-2-carboxylate

3-乙氧基羰基-2-甲基喹噁啉

2-methyl-3-ethoxycarbonylquinoxaline 4-N-oxide

pyridazino[4,5-b]quinoxalin-4-ylhydrazine