4-羟基-2-乙基喹啉羧酸酯

ethyl 2-oxobenzo[h]chromene-4-carboxylate

3-anilino-1-phenylpyrrole-2,5-dione

1-甲基乳清酸

2-氨基-4,7-二羟基-6-甲基蝶啶