3-溴甲基-苯并呋喃-2-羧酸乙酯

2,3-dihydro-1H-[1]benzofuro[2,3-d]pyridazin-4-one

ethyl 3-formyl-1-benzofuran-2-carboxylate

3-(hydrazinylmethyl)-1-benzofuran-2-carboxylic acid,hydrochloride

甲醛