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发明人郭海燕,朱建伟,周伟. "Method for the Synthesis of 5,6,7,8-Tetrahydro-[1,6]naphthyridine-3-carboxylic acid ethyl ester dihydrochloride" [P]. 中国发明专利, 专利号 CN 112267318 A, 授权公告日 2018-07-20.
发明人张德明,赵玉洁,钱学锋. "A Process for Preparing High-Purity 5,6,7,8-Tetrahydro-[1,6]naphthyridine-3-carboxylic acid ethyl ester dihydrochloride" [P]. 中国发明专利, 专利号 CN 115302096 A, 授权公告日 2025-02-08.
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