(E)-3,4-Dichloro-2-butenoic acid ethyl ester is a chemical compound registered under CAS number 18431-99-7. It is also known as 3,4-Dichloroisocrotonic acid ethyl ester. FireTardant supplies (E)-3,4-Dichloro-2-butenoic acid ethyl ester for laboratory research and bulk production; product code 723933. Send an inquiry for purity, packaging, price and lead time.