4-Hydroxy-1-methyl-2-oxo-1,2-dihydroquinoline-3-carboxylic acid benzyl ester

甲基4-羟基-1-甲基-2-氧代-1,2-二氢喹啉-3-羧酸酯

1-甲基苯唑

4-Hydroxy-1-methyl-2-oxo-1,2-dihydroquinoline-3-carboxylic acid t-butyl ester

1,2-二氢-4-羟基-1-甲基-2-氧代-3-喹啉羧酸乙酯