5-羟基-2-甲基苯并呋喃

2-(ethoxymethyl)benzofuran-5-ol

methyl 4,7-dihydroxy-1-benzothiophene-2-carboxylate

2-bromo-3,6-dimethoxybenzaldehyde

5-[tert-butyl(dimethyl)silyl]oxy-2-hydroxybenzaldehyde