40349-49-3

4-maleimidobenzoic acid methyl ester methyl 4-(2,5-dioxopyrrol-1-yl)benzoate 4-(2,5-dioxo-1-pyrrolyl)benzoic acid methyl ester methyl 4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)benzoate Benzoic acid, 4-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)-, methyl ester