ethyl 5-iodopyridine-2-carboxylate

3-氨基-3-(5-甲基-2-噻吩基)丙酸

2-氯-4-乙氧基烟腈

4-oxo-2-phenyl-2,3-dihydrochromene-6-carboxylic acid

4-oxo-2-phenyl-chroman-6-carboxylic acid ethyl ester