CAS 929867-15-2 appears in our catalog under these names: 4-Oxo-4-((pyridin-4-ylmethyl)(2-(pyrrolidin-1-ylsulfonyl)ethyl)amino)but-2-enoic acid, 97%, (2E)-4-Oxo-4-((pyridin-4-ylmethyl)[2-(pyrrolidin-1-ylsulfonyl)ethyl]amino)but-2-enoic acid, 95%. Offered by: AmBeed, Combi-blocks. Available pack sizes: 5g, 1g, 500mg.