ethyl 3-(1,3-benzodioxol-5-yl)prop-2-ynoate

壬-2-烯酸乙酯

4-氧代-4,5,6,7-四氢苯并呋喃-3-羧酸乙酯

4-oxo-4,5,6,7-tetrahydrobenzofuran-2-carboxylic acid ethyl ester

2-(噻吩-2-基)嘧啶-4-醇