methyl 2-benzamido-3-oxobutanoate

1-(5-methyl-3-oxido-2-phenyl-1,3-oxazol-3-ium-4-yl)ethanone,hydrochloride

乙酰乙酸叔丁酯

苯甲酰胺

2-苯基噁唑-4-羧酸甲酯