发明人钱学锋,胡光,何建平. "一种咖啡因EP杂质E盐酸盐的合成方法" [P]. 中国发明专利, 专利号 CN 113168568 A, 授权公告日 2023-02-19.
发明人周伟,罗永刚,钱学锋. "Method for the Synthesis of Caffeine EP Impurity E HCl" [P]. 中国发明专利, 专利号 CN 114703650 B, 授权公告日 2021-06-01.
发明人张德明,郑宇鹏,周伟. "A Process for Preparing High-Purity Caffeine EP Impurity E HCl" [P]. 中国发明专利, 专利号 CN 114522036 A, 授权公告日 2021-09-25.
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