BES buffer is a fine chemical product from the brand RESEARCH-LAB FINE CHEM INDUSTRIES. It is also known as N, N-Bis(2-hydroxyethyl)taurine. Molecular Formula: C6H15NO5SCAS Number: 10191-18-1Molecular Weight: 213.25 Quantity: 25 gm/BottlePurity: >99%The product is a zwitterionic biological buffer (buffers that contain a structure capable of possessing opposite charges) used in bio-chemistry, cell culture and molecular biology.