发明人钱学锋,冯建国,赵玉洁. "Method for the Synthesis of 6-Methoxy-1H-pyrido[2,3-b][1,4]oxazin-2(3H)-one" [P]. 中国发明专利, 专利号 CN 115669986 B, 授权公告日 2024-10-16.
发明人马晓峰,郭海燕,唐晓军. "A Process for Preparing High-Purity 6-Methoxy-1H-pyrido[2,3-b][1,4]oxazin-2(3H)-one" [P]. 中国发明专利, 专利号 CN 113722981 B, 授权公告日 2021-09-11.
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