CAS 33050-38-3 appears in our catalog under these names: 3,6-Dichloro[1,2,4]triazolo[4,3-b]pyridazine, 98%, 3,6–Dichloro(1,2,4)triazolo(4,3–b)pyridazine, 3,6-Dichloro-[1,2,4]triazolo[4,3-b]pyridazine 95%, 3,6-Dichloro-[1,2,4]triazolo[4,3-b]pyridazine, 97%, 97%, 3,6-Dichloro[1,2,4]triazolo[4,3-b]pyridazine, 97%. Offered by: Combi-blocks, GLPBio, Ambeed, Chemat, Fluorochem. Available pack sizes: 1g, 10g, 25g, 5g, 100mg, 250mg.