EI-0300 (OTTO) 1-Ethyl-3-methylimidazolium trifluoromethanesulfonate, ≥98.0% (T) Cas 145022-44-2 - used as a solvent to produce Ionic Polymer-Polymer Composites (IP2C) and also in lipase-catalyzed enantioselective amine acylation with 4-pentenoic acid.