(2,5-dioxopyrrolidin-1-yl) 2,2,2-trifluoroacetate

3-[[(2Z)-3-carboxy-1-oxo-2-propen-1-yl]amino]benzoic acid

N-羟基丁二酰亚胺

m-N-马来酰亚氨基苯甲酸

马来酸酐