title: Surface-active betaines: N-alkyl-NN-dimethylalanine hydrobromides and their critical micelle concentrations.
mesh_terms: D001622:Betaine; D002849:Chromatography, Gas; D009905:Optical Rotatory Dispersion; D000644:Quaternary Ammonium Compounds / Q000138:chemical synthesis; D013500:Surface Tension; D013501:Surface-Active Agents / Q000138:chemical synthesis
chemical_list: D000644:Quaternary Ammonium Compounds; D013501:Surface-Active Agents; D001622:Betaine