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O'Brien P Q, Williams B T, Klinger H. "A Process for Preparing High-Purity 7-Methyl-3-oxo-N-phenyl-5-(thiophen-2-yl)-2,3-dihydro-5H-thiazolo[3,2-a]pyrimidine-6-carboxamide" [P]. US Patent, US 10696887 B2, 2020-09-05.
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