2-Hydroxyethanesulfonic Acid

• CAT Number: R025049
• CAS Number: 107-36-8
• Molecular Formula: C2H6O4S
• Molecular Weight: 126.13
• Purity: 80%
• Synonyms: (2-Hydroxyethyl)sulfonic Acid; (Hydroxyethyl)sulfonic Acid; 2-Hydroxyethane-1-sulfonic Acid; Ethanolsulfonic Acid; Isethionic Acid; NSC 60516; Tego HES 70
• Target: Endogenous Metabolite
• Storage: 3 years -20C powder
• Related CAS: 110-04-3 5982-56-9 7484-34-6 15909-83-8
• IUPAC Name: 2-hydroxyethanesulfonic acid
• InChI: InChI=1S/C2H6O4S/c3-1-2-7(4,5)6/h3H,1-2H2,(H,4,5,6)
• InChIKey: SUMDYPCJJOFFON-UHFFFAOYSA-N
• SMILES: C(CS(=O)(=O)O)O

2-Hydroxyethanesulfonic acid（Cat No.:R025049）, also known as isethionic acid, is a bifunctional molecule containing both a sulfonic acid group and a hydroxyl group on a two-carbon backbone. Its molecular structure makes it highly polar and water-soluble, and it is often used as a buffering agent, surfactant intermediate, or precursor in pharmaceutical and personal care formulations. The sulfonic acid group imparts strong acidity and excellent ion-exchange properties, while the hydroxyl group allows for further chemical modification. Isethionic acid is also used in electroplating baths, biodegradable detergents, and as a counterion in drug formulations.