1H-Imidazole-4-ethanaminium,a-carboxy-2,3-dihydro-N,N,N-trimethyl-2-thioxo-,inner salt, (aS)-;L-(+)-Ergothioneine;Ammonium, [1-carboxy-2-(2-thioxo-4-imidazolin-4-yl)ethyl]trimethyl-, hydroxide, inner salt;L-()-Ergothioneine;[(S)-1-Carboxy-2-(2-thioxo-2,3-dihydro-1H-imidazol-4-yl)-aethyl]-trimethyl-ammonium,Betain;[(S)-1-carboxy-2-(2-thioxo-2,3-dihydro-1H-imidazol-4-yl)-ethyl]-trimethyl-ammonium,betaine;2-thiol-L-histidine-betaine;Phytothioneine;SyMpectothion;Thiasine;Thiolhistidine betaine;thiotaine;Thiotane;NSC 7175;Sympectothion;Thioneine;(S)-;2-Mercapto-N,N-dimethylhistidine methyl ester betaine;2-Mercaptohistidine betaine;2-Mercaptohistidine trimethylbetaine