CAS 27821-45-0 appears in our catalog under these names: Uridine 5'-diphosphoric acid disodium salt, 97%, Uridine 5'-diphosphate Disodium Salt, Uridine-5'-diphosphate disodium salt/ 100%, UDP disodium salt, Uridine–5'–diphosphate disodium salt. Offered by: Combi-blocks, Chemat Brand, TargetMol, GLPBio, Thermo Scientific (Alfa Aesar). Available pack sizes: 1g, 25g, 5g, on request, 50mg, 100mg, 500mg, 10mM (in 1ml water).