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发明人郭海燕,孙丽萍,郑宇鹏. "Method for the Synthesis of 4-Morpholin-4-yl-pyridine-2-carboxylic acid x HCl, 98%" [P]. 中国发明专利, 专利号 CN 111114757 B, 授权公告日 2025-08-28.
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