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Preparation and evaluation of cationic 99Tc/99mTc dimethoxy- and diethoxy-hexanedione dioxime complexes

✍ Scribed by Z. F. Su; K. H. Linse; H. J. Steinmetz; K. Schwochau


Publisher
John Wiley and Sons
Year
1992
Tongue
French
Weight
537 KB
Volume
31
Category
Article
ISSN
0022-2135

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✦ Synopsis


Abstract

The new ligands 1,6‐dimethoxy‐3,4‐hexanedione dioxime (DMHD) and 1,6‐diethoxy‐3,4‐hexanedione dioxime (DEHD) were synthesized and their boron containing ^99^Tc/^99m^Tc complexes, formed by reduction of pertechnetate with BH~4~^‐^, were isolated, purified and characterized by IR/UV/VIS spectroscopy and FAB mass spectrometry. These rather stable cationic complexes differ significantly in lipophilicity as assessed by their octanol/saline partition coefficients and HPLC capacity factors. Unexpectedly the organ uptake and clearance of both complexes in mice proved to be very similar with only the uptake of ^99m^Tc‐DMHD in the kidneys being enhanced.


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