CAS 59957-75-4 appears in our catalog under these names: 2,2'-Dipyridyl diselenide, 1,2-Di(pyridin-2-yl)diselane 95%, 2,2'-Dipyridyl diselenide, 95%, 95%. Offered by: Biosynth, Ambeed, Chemat. Available pack sizes: 0,25g, 0,5g, 1g, 5g, 50mg, 100mg, 250mg.