https://www.selleckchem.com/MEK.html
The first binuclear Gd-complex of the 12-membered pyridine-based polyaminocarboxylate macrocyclic ligand PCTA was synthesized by C-C connection of the pyridine units through two different synthetic procedures. A dimeric AAZTA-ligand was also synthesized with the aim to compare the relaxometric results or the two ditopic Gd-complexes. Thus, the 1 H relaxometric study on [Gd2 PCTA2 (H2 O)4 ] and on [Gd2 AAZTA2 (H2 O)4 ]2- highlighted the remarkable rigidity and compactness of the two binuclear complexes, which results in molar relaxivities (per Gd), a
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