CAS 842973-21-1 appears in our catalog under these names: ([1,2,4]Triazolo[4,3-b]pyridazin-6-ylamino)acetic acid, 95%, 2-((1,2,4)Triazolo(4,3-b)pyridazin-6-ylamino)acetic acid, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 250mg, 5g, 1g.