CAS Registry Number

CAS 10191-18-1 — BES (N,N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic acid)

BES, or N,N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic acid, is a zwitterionic buffering agent commonly used in biochemical and molecular biology applications, particularly in protein and enzyme studies. It maintains stable pH in the physiological range and is valued for its low ionic strength and minimal interference with biological processes. CAS: 10191-18-1, Molecular Formula: C6H15NO5S, Molecular Weight: 213.25, Storage: Ambient, Signal Word: Warning. Molekula supplies BES from research to bulk quantities with full documentation and ISO 9001:2015 traceability.