N-(2-羟乙基)马来酰亚胺

2,3-dihydropyrrolo[2,1-b]oxazol-5(7ah)-one

5-hydroxy-1-(2-hydroxyethyl)-1H-pyrrol-2(5H)-one

1-(2-hydroxyethyl)-5-methoxy-1H-pyrrol-2(5H)-one

ethyl 2-[1-(2-acetyloxyethyl)-4-bromopyrrol-2-yl]acetate