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Thorium

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Definition: Thorium. A radioactive element of the actinide series of metals. It has an atomic symbol Th, atomic number 90, and atomic weight 232.04. It is used as fuel in nuclear reactors to produce fissionable uranium isotopes. Because of its radioopacity, various thorium compounds are used to facilitate visualization in roentgenography.  naturally radioactive; IM   
 
SubstanceCAS Registry & nameCategoriesSourceDrugs*
thorium-227-p-isothiocyanato-benzyl-DOTA-trastuzumab  0   *Organometallic Compounds *Antibodies, Monoclonal, Humanized Thorium. Int J Radiat Oncol Biol Phys. 2011 Feb 1;79(2)
thorium-227-DOTA-rituximab  0   *Organometallic Compounds *Antibodies, Monoclonal, Murine-Derived Thorium. Int J Radiat Oncol Biol Phys. 2009 Nov 1;75(3):886-95
(227)thorium-diethylene triamine N,N',N''-penta(methylene)phosphonic acid  0   *Organometallic Compounds Thorium. Anticancer Res 2004 Jan-Feb;24(1):101-5
(227)thorium-1,4,7,10-tetraazacyclododecane-N,N',N'',N'''-1,4,7,10-tetra(methylene)phosphonic acid  0   *Organometallic Compounds Thorium. Anticancer Res 2004 Jan-Feb;24(1):101-5

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Sources: NLM Medical Subject Headings, NIH UMLS, Drugs@FDA, FDA AERS original data copyright United States Government. No endorsement implied. Last modified 6/6/2012
Warning: the drugs or drug combinations referred to here may be similar or related, but are not be the same ones and may not have the same pharmacological action as other substances described on the same page or in the same row. Please refer to product monograph or to your doctor
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