CAS 610275-77-9 appears in our catalog under these names: 1-[4-(Methylsulfonyl)-2-nitrophenyl]piperazine, 95%, 1-(4-(Methylsulfonyl)-2-nitrophenyl)piperazine, 1-(4-Methylsulfonyl-2-nitrophenyl)piperazine. Offered by: Combi-blocks, Biosynth, Fluorochem. Available pack sizes: 250mg, 1g, 2,5g.