发明人徐明华,钱学锋,郭海燕. "Method for the Synthesis of Methyldopa O-Sulfate (Meta)" [P]. 中国发明专利, 专利号 CN 109241258 A, 授权公告日 2022-06-01.
发明人杨光,朱建伟,孙丽萍. "A Process for Preparing High-Purity Methyldopa O-Sulfate (Meta)" [P]. 中国发明专利, 专利号 CN 111007706 A, 授权公告日 2024-09-21.
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