OHCC≡CCHO 丁炔二醛 butynediol CH3CH2COCH2CHO3-氧代戊醛3-0 pentanal CH2 COCH2 CH3 1-环己基2一丁酮 1-cyclohexyl-2-butanone CHO 2一氧代环己烷甲醛 2-oxocyclohexanecarboxaldehyde H3O H3C CH2CH2CHO3-(3,3-二甲基环己基)丙醛 3-(3, 3-dimethylcyclohexyl)prpanalCH3 CH2 COCH2 CHO CH2COCH2CH3 O CHO CH2 CH2 CHO H3 C H3 C OHCC CCHO 丁炔二醛 butynedial 3－氧代戊醛 3-oxopentanal 1-环己基2－丁酮 1-cyclohexyl-2-butanone 2－氧代环己烷甲醛 2-oxocyclohexanecarboxaldehyde 3-(3,3-二甲基环己基）丙醛 3-(3,3-dimethylcyclohexyl)prpanal