1-Propanesulfonic acid, 2-hydroxy-3-((2-hydroxy-1,1-bis(hydroxymethyl)ethyl)amino)- 2-Hydroxy-3-((2-hydroxy-1,1-bis(hydroxymethyl)ethyl)amino)propanesulphonic acid 3-N-(2-Hydroxy-1,1-bis(hydroxymethyl)ethylamino)-2-hydroxypropanesulfonic acid 68399-81-5 EINECS 269-993-8 NSC 610929