3-methylpyrido[3,4-e][1,2,4]triazine

8-甲氧基-4-氧代-1,4-二氢-1,5-萘啶-3-羧酸乙酯

5-methyl-4,8-dioxo-1,4,5,8-tetrahydro-[1,5]naphthyridine-3-carboxylic acid ethyl ester

1-甲基-4(1H)-吡啶酮

4-羟基-3,5-二碘吡啶