3-(2-methylprop-1-en-1-yl)pentane-2,4-dione

3-(2-ethylbutylidene)pentane-2,4-dione

3-(2-ethylbut-1-en-1-yl)pentane-2,4-dione

3-(thiophen-2-ylmethylidene)pentane-2,4-dione

丙酮醛 1-苯基腙