Process For The Preparation Of A Sulfated Derivative Of 3,5-Diiodo-O-[3-Iodophenyl]-L-Tyrosine
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United States of America Patent
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Apr 10, 2014
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Apr 29, 2011
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Abstract
The present invention relates to a process for the preparation of the mono sodium salt of the derivative 3,5-diiodo-O-[3-iodo-4-(sulphooxy)phenyl]-L-tyrosine (T3S) by starting from the corresponding phenolic compound, in the presence of chlorosulfonic acid and dimethylacetamide as a solvent. The so obtained T3S compound may conveniently be isolated in a pure form as a solid in good yields. The present invention further relates to the process for T3S preparation, wherein the starting reagent is T2 and further comprising the formulation of such compound in tablets. Furthermore, the invention discloses non-radioactive immunoassays based on T3S derivatives.
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