3-Butenoyl chloride, 2,3-dimethyl-

2,3-Dimethyl-3-butenoyl Chloride is an intermediate in the synthesis of (Z)-7-(((R)-2-Amino-2-carboxyethyl)thio)-2-(2,3-dimethylbut-3-enamido)hept-2-enoic Acid (A604435), which is an impurity of Cilastatin (C441100), prevents renal metabolism of penem and carbapenem antibiotics by specific and reversible dehydropeptidase I inhibition. Antibacterial adjunct.