CAS 1820683-16-6 appears in our catalog under these names: 4-Chloro-2-phenyl-5-(piperazin-1-yl)-2,3-dihydropyridazin-3-one dihydrochloride, 95%, 4-Chloro-2-phenyl-5-(piperazin-1-yl)-2,3-dihydropyridazin-3-one dihydrochloride. Offered by: Combi-blocks, AmBeed, Biosynth. Available pack sizes: 1g, 250mg, 100mg, 5g, 10g, 0,5g.