发明人马晓峰,孙丽萍,郭海燕. "Method for the Synthesis of H-Leu-Leu-NH? · HCl" [P]. 中国发明专利, 专利号 CN 113804714 B, 授权公告日 2019-05-17.
发明人徐明华,赵玉洁,冯建国. "A Process for Preparing High-Purity H-Leu-Leu-NH? · HCl" [P]. 中国发明专利, 专利号 CN 116130033 B, 授权公告日 2023-08-15.
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