13177-71-4
5,6-dihydrofuro[2,3-d]pyridazine-4,7-dione
→
~60%
13177-70-3
4,7-二氯呋喃并[2,3-d]吡嗪
52900-79-5
methyl 3-methoxycarbonylfuran-2-carboxylate
13379-61-8
furan-2,3-dicarbohydrazide