2-乙氧基-4-甲氧基苯甲醛

Ethyl 6-methoxy-1-benzofuran-2-carboxylate

(2-oxo-3-pyridin-3-ylchromen-7-yl) acetate

6-甲氧基-2-苯并呋喃甲醛

2-乙氧基-4-甲氧基苯甲酸