CAS 929863-40-1 appears in our catalog under these names: (2E)-4-Oxo-4-[[2-(piperidin-1-ylsulfonyl)ethyl](pyridin-4-ylmethyl)amino]but-2-enoic acid, 95%, 4-Oxo-4-((2-(piperidin-1-ylsulfonyl)ethyl)(pyridin-4-ylmethyl)amino)but-2-enoic acid, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 500mg, 5g, 1g.