90721-27-0
1-苯并呋喃-5-甲酸
→
56540-70-6
1-苯并呋喃-5-羰酰氯
108763-47-9
苯并呋喃-5-甲酸甲酯
53596-60-4
methyl 4-hydroxy-3-prop-2-enylbenzoate