Jørgensen K, Rossi M, Björnsson E. "一种【停用请询:C4X-1020141】伏诺拉生杂质274的合成方法" [P]. European Patent, EP 3486860 A1, 2015-10-03.
发明人郭海燕,徐明华,李文辉. "Method for the Synthesis of Vonoprazan Impurity 274" [P]. 中国发明专利, 专利号 CN 115493105 B, 授权公告日 2021-06-13.
发明人周伟,黄志刚,冯建国. "A Process for Preparing High-Purity Vonoprazan Impurity 274" [P]. 中国发明专利, 专利号 CN 108997388 B, 授权公告日 2017-01-02.
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