(3Z)-3-[(E)-3-(3,4-dimethoxyphenyl)-1-hydroxyprop-2-enylidene]-6-methylpyran-2,4-dione

3-乙基-4-羟基-6-甲基-2H-吡喃-2-酮

2-(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)-4,7-dimethyl-3,4-dihydro-2H,5H-pyrano[3,2-c]pyran-5-one

2,4,6-庚三酮

二氧化碳