苯并呋喃-2-甲酰胺

3-methyl-2-phenylcyclopent-2-en-1-one

2-(4-硝基苯基)乙酰氯

乙二酸 1-(1,1-二甲基乙基) 2-乙酯

2-(dimethylamino)-2-oxoacetyl chloride