CAS 856844-32-1 appears in our catalog under these names: 4-Pyrimidin-2-ylpiperazine-1-carboximidamide sulfate, 95%, 4-(Pyrimidin-2-yl)piperazine-1-carboximidamide, 95+%. Offered by: Combi-blocks, Chemat Brand. Available pack sizes: 250mg, 1g, on request.