2-(Tris(hydroxymethyl)methylamino)ethane-1-sulphonic acid 7365-44-8 AI3-62522 EINECS 230-906-3 Ethanesulfonic acid, 2-((2-hydroxy-1,1-bis(hydroxymethyl)ethyl)amino)- N-Tris(hydroxymethyl)methyl-2-aminoethanesulfonic acid N-Tris(hydroxymethyl)methyl-2-aminomethane sulfonate TES Tris(hydroxymethyl)methyl-2-aminomethane sulfonic acid