发明人朱建伟,沈红梅,冯建国. "Method for the Synthesis of Azelastine EP Impurity B" [P]. 中国发明专利, 专利号 CN 116859641 B, 授权公告日 2023-11-22.
发明人张德明,刘建华,唐晓军. "A Process for Preparing High-Purity Azelastine EP Impurity B" [P]. 中国发明专利, 专利号 CN 108852188 A, 授权公告日 2024-11-08.
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