2-Pentenoic acid, 2-ethyl-, (E)-

2-(4-硝基苯基)丁酸乙酯

ethyl 2-(2,3,5,6-tetramethylphenoxy)butanoate

ethyl 2-iodobutanoate

3-乙基-3,4-二氢-2(1H)-喹喔啉酮