4-(Chloromethyl)-5-methyl-1,3-dioxol-2-one4-(chloromethyl)-5-methyl-2H-1,3-dioxol-2-one4-Chloromethyl-5-methyl-1,3-dioxol-2-one4-氯甲基-5-甲基-1,3-二氧杂环戊烯-2-酮4-Chloromethyl-5-methyl-2-oxo-1,3-dioxole4-Chloromethyl-5-methyl-1,3-dioxol-2-one(5-Methyl-2-oxo-1,3-dioxol-4-yl)methyl Chloride4-Chloromethyl-5-methyl-1,3-dioxol-2-one4-Chloromethyl-5-methyl-2-oxo-1,3-dioxole