520-45-6
脱氢乙酸
→
541-98-0
6-methylpyran-2,4-dione
402-61-9
5-甲基-1H-吡唑-3-羧酸
123-54-6
乙酰丙酮
672-89-9
4-甲氧基-6-甲基-2H-吡喃酮
4225-42-7
2-methoxy-6-methylpyran-4-one
85825-79-2
6-methyloxane-2,4-dione