CAS 474329-57-2 appears in our catalog under these names: tert-Butyl 4-(4-bromo-2-nitrophenyl)piperazine-1-carboxylate, 95%, tert-Butyl 4-(4-bromo-2-nitrophenyl)piperazine-1-carboxylate, 97%, 97%. Offered by: Combi-blocks, Chemat. Available pack sizes: 1g, 5g, 100mg.