发明人张德明,朱建伟,郭海燕. "Method for the Synthesis of Ethyl 4-methylpyrrolidine-2-carboxylate" [P]. 中国发明专利, 专利号 CN 111339502 B, 授权公告日 2019-09-12.
发明人周伟,郭海燕,刘建华. "A Process for Preparing High-Purity Ethyl 4-methylpyrrolidine-2-carboxylate" [P]. 中国发明专利, 专利号 CN 108197875 B, 授权公告日 2020-02-12.
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