1-(4-Isothiocyanatobenzyl)diethylenetriaminepentaacetic acid 102650-30-6 Glycine, N-(2-((2-(bis(carboxymethyl)amino)ethyl)(carboxymethyl)amino)-1-((4-isothiocyanatophenyl)methyl)ethyl)-N-(carboxymethyl)-, (S)- Scn-Bz-dtpa