Abstract
AbstractNowadays chemistry of 68Ga‐labelled radiopharmaceuticals is one of the drivers for Positron Emission Tomography (PET). Buffers solutions for radiolabelling play one of the important roles here. Despite HEPES buffer providing high radiochemical conversions, its use is undesirable due to high toxicity. In this article we report a simple procedure involving usage of aqueous triethanolammonium (TEA) and tris(hydroxymethyl)methyl‐ammonium (TRIS) salts of biologically active carboxylic acids in a process of gallium‐68 complexation with PSMA‐HBED‐CC. These salts provide not only high radiochemical conversions but also are already widely used in biochemistry, molecular biology, agriculture and medicine as drugs of a wide spectrum of action and growth stimulating drugs (Trekrezan™, Chlorokrezacin™).
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