发明人刘建华,冯建国,郭海燕. "Method for the Synthesis of 2-Chloro-4-ethoxynicotinic acid" [P]. 中国发明专利, 专利号 CN 116064410 B, 授权公告日 2023-12-12.
O'Brien P Q, Lee S K, Kumar R. "A Process for Preparing High-Purity 2-Chloro-4-ethoxynicotinic acid" [P]. US Patent, US 11930883 B2, 2023-03-26.
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