2-[2-(5-硝基-呋喃-2-基）乙酰基]-喹啉-4-甲酸

2-[(E)-(aminocarbamothioylhydrazinylidene)methyl]quinoline-4-carboxylic acid

2-methyl-1-oxidoquinolin-1-ium-4-carboxylic acid

1-甲基-2-氧代-1,2-二氢-喹啉-4-羧酸