3,7,7-trimethyl-3,4,6,8-tetrahydro-1H-quinoline-2,5-dione

N-(5,5-dimethyl-3-oxocyclohex-1-enyl)-2-methyl-β-alanine methyl ester

1,3-bis(5,5-dimethyl-3-oxocyclohex-1-enamino)-2-methylpropan-1-one

methyl α-methyl-γ-carboethoxy-γ-acetylbutyrate

乙基2,6-二羟基-4-甲基苯甲酸酯