2-hydroxy-2,5-dimethylhex-4-en-3-one

2,5-dimethyl-3-oxohex-4-en-2-yl di-n-butylcarbamate

3-n-butyl-5,5-dimethyl-4-(2-methylallylidene)oxazolidin-2-one

butyl 2,5-dimethyl-3-oxohex-4-en-2-yl carbonate

2,5-二甲基-3,4-己烷二酮