4,5-dimethylcyclohexa-1,4-dienecarboxylic acid

2,3-二甲基-1,3-丁二烯

丙炔酸

1,4-Cyclohexadiene-1-carboxylic acid, 4,5-dimethyl-2-(trimethylsilyl)-

4-溴-1,2-二甲苯