发明人王建平,胡光,杨光. "Method for the Synthesis of Nicotinamide impurity 21" [P]. 中国发明专利, 专利号 CN 112168252 B, 授权公告日 2024-12-23.
Rossi M, Nielsen H, Martínez F. "A Process for Preparing High-Purity Nicotinamide impurity 21" [P]. European Patent, EP 3049532 A1, 2022-02-16.
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