171359-14-1 2-Butanesulfinic acid, 4-oxo-4-((2-phenylethyl)amino)-, compd. with benzeneethanamine (1:1) 2-Phenylethylammonium salt of the 2-phenylethylamide of beta-sulfinobutyric acid 4-Oxo-4-((2-phenylethyl)amino)-2-butanesulfinic acid compd. with benzeneethanamine (1:1) Benzeneethanamine, 4-oxo-4-((2-phenylethyl)amino)-2-butanesulfinate