CAS 592-31-4 appears in our catalog under these names: n-Butylurea, 96% , Butylurea, >96.0%(N), N-Butylurea 98%, BUTYLUREA, 99%, N-Butylurea, 98%, 98%. Offered by: Thermo Scientific (Alfa Aesar), TCI, Ambeed, Sigma-Aldrich, Chemat. Available pack sizes: 100g, 500g, 25g, 1000g, 5g, 1kg.