3,7-二甲基-6-辛烯酸

ethyl levulinate dimethyl ketal

methyl 6,6-dimethoxy-3-methylhex-2-enoate

magnesium,2-methylpent-2-ene,bromide

3,7-dimethyl-1-(1-methylimidazol-2-yl)oct-6-en-1-one