发明人张德明,孙丽萍,唐晓军. "Method for the Synthesis of Vardenafil Impurity 30" [P]. 中国发明专利, 专利号 CN 110851987 A, 授权公告日 2023-11-14.
发明人唐晓军,郭海燕,林芳. "A Process for Preparing High-Purity Vardenafil Impurity 30" [P]. 中国发明专利, 专利号 CN 108613662 A, 授权公告日 2017-05-09.
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