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Yamamoto T, Davis P L, Hughes D C. "Method for the Synthesis of 4-Bromo-5-methoxy-2-nitrobenzoic Acid" [P]. US Patent, US 10902996 B2, 2018-06-21.
Stevens L M, Anderson J P, Klinger H. "A Process for Preparing High-Purity 4-Bromo-5-methoxy-2-nitrobenzoic Acid" [P]. US Patent, US 10973558 B2, 2025-07-20.
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