"N and/or nalpha derivatized, metal and organic protected l-histidine for coupling to biomolecules for highly efficient labeling with [m(oh2)3 (co)3]+ by fac coordination"
"N and/or nalpha derivatized, metal and organic protected l-histidine for coupling to biomolecules for highly efficient labeling with [m(oh2)3 (co)3]+ by fac coordination"