2,3-dihydroxy-quinoline-4-carboxylic acid

1,2-二氢-3-羟基-2-氧代喹啉-4-羧酸乙酯

2-(5,6-dihydroxy-1H-indol-2-yl)-1H-indole-5,6-diol

吲哚-2,3-二酮

三甲基硅烷化重氮甲烷