4-Chloromethyl-5-methyl-1,3-dioxol-2-one is an important reagent in the preparation of angiotensin II receptor antagonist such as Olmesratan Medoxomil. 4-Chloromethyl-5-methyl-1,3-dioxol-2-one is also used in the preparation of prodrugs of ampicillin.

CAS：80841-78-7
中文别名：4-(氯甲基)-5-甲基-1,3-二氧杂环戊烯-2-酮;1,3-二氧代-2-羰基-4-氯甲基-5-甲基-环戊-4-烯;4-氯甲基-5-甲基-1,3,-二氧杂环环戊烯-2-酮;4-氯甲基-5-甲基-2-氧代-1,3-二氧杂环戊烯;氯代物;
英文别名：4-chloromethyl-5-methyl-1,3-dioxolen-2-one;DMDO-CL;medoxomil chloride;4-chloromethyl-5-methyl-2-oxo-1,3-dioxolene;4-ChloroMethyl-5-Methyl-1;4-Chloromethyl-5-methyl-1,3-dioxol-2-on;4-Choromethyl-5-methyl-2-oxo-1,3-dioxole;4-CHLOROMETHYL-5-METHYL-1,3-DIOXOL-2-ONE;4-CHLOROMETHYL-5-METHYL-2-OXO-1,3-DIOXOLE;4-CHLOROMETHYL-5-METHYL-1,3-DIOXOL-3-ONE;4-Chloromethyl-5-Methyl-1,3-Di;4-methyl-5-chloro methyl-1,3-dioxol-2-one;
分子式：C5H5ClO3
分子量：148.544
精确质量：147.993
Psa：43.35
Logp：1.28

MDL号：MFCD07787494

外观与性状：淡黄色透明液体
密度：1.362 g/cm3
沸点：163.2ºC at 760 mmHg
闪点：66.7ºC
折射率：1.481

安全说明：S26
危险类别码：R22
海关编码：2932999099
危险品标志：Xn

用途
用作医药中间体，奥美沙坦中间体，奥美沙坦酯侧链DMDO-CL。