CAS 10191-18-1 appears in our catalog under these names: BES, BES, 99% , 2-(N,N-Bis-(2-hydroxyethyl)amino)ethanesulfonic acid, BES, 99+%, for biochemistry, N,N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic Acid [Good's buffer component for biological research], >98.0%(T). Offered by: GLPBio, Thermo Scientific (Alfa Aesar), Biosynth, Thermo Scientific (Acros), TCI. Available pack sizes: 100g, 500g, 25g, 0,5kg, 1kg, 250g, 2kg, 5g.