134009-45-3 99Tcm-EC 99mTc-L,L-EC Tc-99m-EC Tc-99m-N,N'-Ethylene-1-dicysteine Tc-Ethylene dicysteine Techenetium-99m-L,L-EC Technetate(2-), ((N,N'-1,2-ethanediylbis(L-cysteinato))(5-)-N,N',S,S')oxo-, dihydrogen, (SP-5-35)- Technetium Tc 99m-L,L-ethylenedicysteine technetium Tc 99m-ethylenedicysteine