6-甲基-2-硒基尿嘧啶

2,6,6-三甲基-4-氧代环己-2-烯-1-羧酸乙酯

异佛尔酮

ethyl 4,6,6-trimethyl-2-oxocyclohex-3-ene-1-carboxylate

2-ethyl-5-methyl-4H-pyrazol-3-one