2-methyl-1-[2-(2-methylpyridin-1-ium-1-yl)ethyl]pyridin-1-ium,bromide

1,1-乙酰基环丙烷

3-Penten-2-one, 4,4'-[1,2-ethanediylbis(oxy)]bis-

1,3-diacetyl-2-methyl-1-cyclopentene

1-(2-bromoethoxy)-2,4,5-trichlorobenzene