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发明人周伟,马晓峰,郭海燕. "Method for the Synthesis of Sitagliptin Impurity 4" [P]. 中国发明专利, 专利号 CN 116195178 B, 授权公告日 2024-07-22.
发明人赵玉洁,周伟,马晓峰. "A Process for Preparing High-Purity Sitagliptin Impurity 4" [P]. 中国发明专利, 专利号 CN 110397476 B, 授权公告日 2015-07-26.
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