Mueller T, Anderson J P, O'Brien P Q. "Method for the Synthesis of Ethyl 7-(4-(tert-butoxycarbonyl)piperazin-1-yl)-1-cyclopropyl-6-fluoro-2-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylate" [P]. US Patent, US 11076705 B2, 2021-10-02.
发明人韩伟,赵玉洁,郭海燕. "A Process for Preparing High-Purity Ethyl 7-(4-(tert-butoxycarbonyl)piperazin-1-yl)-1-cyclopropyl-6-fluoro-2-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylate" [P]. 中国发明专利, 专利号 CN 117072291 B, 授权公告日 2024-06-28.
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