CAS 26367-48-6 appears in our catalog under these names: Ethyl fumaroyl chloride, Ethyl fumaroyl chloride, (E)-Ethyl 4-chloro-4-oxobut-2-enoate 98%, ETHYL FUMARYL CHLORIDE, (E)-3-(CHLOROFORMYL)-ACRYLIC ACID ETHYL ESTER, 97%. Offered by: GLPBio, Chemat, Biosynth, Ambeed, Sigma-Aldrich. Available pack sizes: 1g, 5g, 10g, 100g, 250mg, 25g.