Zirconium tetraacetate

Solutions of tris(acetylacetonato)zirconium chloride, bis(acetylacetonato)zir-conium dichloride, tetrakis(acetylacetonato)zirconium, zirconium tetraacetate, or zirconium tetranitrate, all reduced with triethylaluminum in hexamethyl-phosphoramide, are said to lead to high molecular weight products [41]. Unfortunately, the solvent is no longer available because of its carcinogenicity. Perhaps such alternate solvents as formamide, dimethylformamide, dimethyl-sulfoxide, and acetonitrile should be investigated. 

The ZEALEX Process Researchers from KRI have shown that the zirconium salt of dibutyl phosphoric acid (ZS-HDBP) was soluble in Isopar-L in the presence of 30% TBP. This super PUREX solvent, known as ZEALEX, extracts actinides (Np-Am) together with lanthanides and other fission products, such as Ba, Cs, Fe, Mo, and Sr from nitric acid solutions. The extraction yields depend on both the molar ratio between Zr and HDBP in the 30% TBP/Isopar-L mixture and the concentration of HN03 (232). Trivalent transplutonium and lanthanide elements can be stripped together from the loaded ZEALEX solvent by a complexing solution, mixing ammonium carbonate, (NH4)2C03, and ethylenediamine-N.N.N. N -tetraacetic acid (EDTA). An optimized version of the process should allow the separation of... 

Rexpronol Acid. See 1,3-Dlamino-2-propanol-N,N,N, N -tetraacetic acid REZ 300. See Urea-formaldehyde resin Rezal 33 Rezal 33GP. See Aluminum/zirconium trichlorohydrex GLY Rezal 36 Rezal 36G Rezal 36G Cone. Rezal 36GP Rezal 36GP Superultrafine. 

Zirconium. The long half life (78.4 h) of Zr, a positron emitter, is of particular interest to immuno-PET since it can enable the longer reaction times required for radioimmunodiagnostic applications and has been explored for its potential to act as a theranostic pair with and Lu. In 2005 van Dongen et al. chelated Zr to cetuximab via succinylated desferrioxamine B (A-sucDf) with p-benzyl isothiocyanate-l,4,7,10-tetra-azacyclododecane-l,4,7,10-tetraacetic acid (p-SCN-Bz-DOTA) and p-iso-thiocyanatobenzyl diethylenetriaminepentaacetic acid (p-SCN-Bz-DTPA) for comparisons with Lu and (was used in the place of Y). The data showed that the zirconium complexes could accurately predict the lutetium and yttrium biodistribution. Subsequently, van Dongen et al. 

---