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Yamamoto T, Fischer A B, Klinger H. "A Process for Preparing High-Purity 7-(4-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)oxy)phenyl)-4-methyl-2-(methylthio)-6,7-dihydro-5H-pyrrolo[2,3-d]pyrimidine" [P]. US Patent, US 11365714 B2, 2017-06-14.
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