Synonyms: Technetium-99Tc,[[diethyl N,N'-1,2-ethanediylbis[L-cysteinato-kN,kS]](3-)]oxo-, (SP-5-35)- (9CI); Technetium-99Tc, [[diethylN,N'-1,2-ethanediylbis[L-cysteinato]](3-)-N,N',S,S']oxo-, (SP-5-35)-;L-Cysteine, N,N'-1,2-ethanediylbis-, diethyl ester, technetium-99 complex;99Tc-ECD; Neurolite; RP 217; Technetium Tc 99m bicisate; Technetium-99 ethylcysteinate dimer