6-CHLORO-1-ETHYL-3-METHYLPYRIMIDINE-2,4(1H,3H)-DIONE

3-乙氧基-2-甲基吡啶

hept-5-en-2-yn-1-ol

2-oct-5-ynoxyoxane

N-乙基-N-(4-乙氧基苯基)乙酰胺