18855-52-2
二甲氨基亚甲基二磷酸四乙酯
+
87627-15-4
4-oxo-3-phenyl-4H-1-benzopyran-8-carboxaldehyde
→
87627-17-6
2-(4-氧代-3-苯基-4H-色烯-8-基)乙酸
87165-82-0
8-bromomethyl-3-phenyl-4H-1-benzopyran-4-one