CAS 27926-72-3 appears in our catalog under these names: 4,4'-Dipyridyl dihydrochloride, 95%, 4,4'-Bipyridine Dihydrochloride, 4,4'–Dipyridyl dihydrochloride, 4,4'-Dipyridyl DiHCl, 98%+(HPLC),RG, 98%+(HPLC),RG. Offered by: Combi-blocks, TRC, GLPBio, Biosynth, Chemat. Available pack sizes: 1g, 5g, 2,5g, 250mg.