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发明人徐明华,杨光,高志强. "Method for the Synthesis of N-Octyl Nortadalafil" [P]. 中国发明专利, 专利号 CN 114023662 B, 授权公告日 2015-11-16.
发明人郭海燕,罗永刚,李文辉. "A Process for Preparing High-Purity N-Octyl Nortadalafil" [P]. 中国发明专利, 专利号 CN 116355554 B, 授权公告日 2016-01-23.
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