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.
📜 SIMILAR VOLUMES
Consequent to the promising results reported with 99mTc(V)-DMSA for imaging certain types of soft tissue tumors, we have developed methods to prepare this radiopharmaceutical in three ways: from freshly prepared reagents, through the use of a two component kit and use of the standard renal DMSA kit