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Radionuclide-based Diagnosis and Therapy of Prostate Cancer
Published in Michael Ljungberg, Handbook of Nuclear Medicine and Molecular Imaging for Physicists, 2022
Sven-Erik Strand, Mohamed Altai, Joanna Strand, David Ulmert
Halogens include elements of the group 7 of the periodic table (fluorine, chlorine, bromine, iodine, and astatine) as well as their isotopes. Radioiodine isotopes can be directly incorporated in the targeting agents through existing tyrosine or histidine residues (see Figure 19.11). Radioiodine isotopes (124I, 123I, 125I and 131I) are usually provided in a salt form (I-) with a -1 valency. Oxidation of iodine, using oxidizing agents (Chloramine-T [32], Iodogen [33]), to the more reactive, electrophilic I+ (+1 valency) initiates its reaction with activated electron-rich aromatic rings such as that present in the amino acid tyrosine. Reaction with other amino acids bearing electron-rich aromatic rings (phenylalanine, tryptophan, and histidine) is also possible, but less likely.
Terms and Definitions
Published in Rick Houghton, William Bennett, Emergency Characterization of Unknown Materials, 2020
Rick Houghton, William Bennett
A halogenated hydrocarbon is any hydrocarbon that contains a covalently bonded halogen. Halogens are found in column 7 of the periodic table and include, commonly, fluorine, chlorine, bromine, iodine, and, uncommonly, astatine.
Environmental Chemistry
Published in Benjamin Alter, Environmental Consulting Fundamentals, 2019
Molecular variations occur primarily by the addition of carbon atoms or by the substitution of hydrogen with an ion or a halogen, which are a group of elements on the periodic table. The halogens include, in order of increasing atomic number, fluorine, chlorine, bromine, iodine, and astatine. Chlorine is the most common halogen found in compounds on the TCL, followed by fluorine and bromine. Iodine and astatine do not appear in compounds on the TCL.
The performance of approximate equation of motion coupled cluster for valence and core states of heavy element systems
Published in Molecular Physics, 2023
Loic Halbert, André Severo Pereira Gomes
We observe that P-IP presents the worst results in terms of the absolute value of among all three approximations considered, and the errors being all negative means that IPs are underestimated. For the state we see that the error is somewhat constant (around −0.5 eV) from chlorine to iodine, and slowly increases for astatine and tennessine to reach around −0.75 eV.