6-[1-[2-(methylamino)ethylamino]ethylidene]cyclohexa-2,4-dien-1-one

4-氧代-4H-1-苯并吡喃-2-甲酰氯

4-氧代-N-(4-氨基磺酰基苯基)苯并吡喃-2-甲酰胺