CAS 956576-55-9 appears in our catalog under these names: 1-[(2,3,5,6-Tetramethylphenyl)sulfonyl]piperidine-4-carbohydrazide, 95%, 1-((2,3,5,6-Tetramethylphenyl)sulfonyl)piperidine-4-carbohydrazide, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 1g, 5g, 250mg.