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Lee S K, O'Brien P Q, Park J H. "Method for the Synthesis of 4-(Carbamoylmethoxy)-3-chloro-5-methoxybenzoic acid" [P]. US Patent, US 11443290 B2, 2019-10-17.
O'Brien P Q, Davis P L, Lee S K. "A Process for Preparing High-Purity 4-(Carbamoylmethoxy)-3-chloro-5-methoxybenzoic acid" [P]. US Patent, US 9444962 B2, 2022-04-26.
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