3-氯-1-(4-甲氧基苯基)吡咯烷-2,5-二酮

N-(4-甲氧基苯基)马来酸

N-(4-methoxyphenyl)succinamide methyl ester

ethyl 4-((4-methoxyphenyl)amino)-4-oxobutanoate

琥珀酸