ethyl 2-carbamoylbenzofuran-3-ylcarbamate

草酰氯

3-amino-2,3-dihydrobenzofuran-2-carboxamide

3-Amino-1,2,3,4-tetrahydro-2,4-dioxobenzofuro(3,2-d)pyrimidine

ethyl 3-(ethoxycarbonylamino)-1-benzofuran-2-carboxylate