2-methyl-4-oxo-oxazino[4',5':4,5]thieno[2,3-b]quinoline

N-acetyl-allo-threonine ethyl ester

alpha-(乙酰基氨基)乙酰基乙酸乙酯

对乙酰氨基酚

4-Acetamido-N-phenylaniline