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发明人冯建国,郑宇鹏,孙丽萍. "A Process for Preparing High-Purity Ethyl 2,2-dimethyl-2H-pyrano[2,3-b]pyridine-6-carboxylate" [P]. 中国发明专利, 专利号 CN 109836444 B, 授权公告日 2024-06-05.
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