CAS 524711-13-5 appears in our catalog under these names: 1-[(2,5-Dimethoxyphenyl)sulfonyl]piperazine, 95%, 1-((2,5-Dimethoxyphenyl)sulfonyl)piperazine, 97%, 1-(2,5-Dimethoxy-benzenesulfonyl)-piperazine. Offered by: Combi-blocks, AmBeed, Fluorochem. Available pack sizes: 250mg, 5g, 1g.