发明人周伟,徐明华,黄志刚. "Method for the Synthesis of Ethyl 6-bromo-1-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 109423540 B, 授权公告日 2018-06-02.
发明人马晓峰,胡光,王建平. "A Process for Preparing High-Purity Ethyl 6-bromo-1-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 116187093 A, 授权公告日 2019-02-28.
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