CAS 21788-49-8 appears in our catalog under these names: Furan Related Compound 2, 2,3–Dimethylfumaric acid, (2E)-Dimethylbut-2-enedioic acid, (2E)-Dimethylbut-2-enedioic acid, min. 95 %, 25 mg, (2E)-Dimethylbut-2-enedioic acid, min. 95 %, 50 mg. Offered by: Chemat Brand, GLPBio, Biosynth, Chemat, Roth. Available pack sizes: on request, 1g, 5g, 0,05g, 0,025g, 0,1g, 0,5g, 0,25g.