142429-30-9
→
~79%
73097-21-9
7-oxofuro[3,2-g]chromene-2-carboxylic acid
188560-05-6
178628-86-9
ethyl 5-formyl-6-(methoxymethoxy)benzofuran-2-carboxylate
N/A
66-97-7
补骨内酯