发明人张德明,林芳,罗永刚. "一种达比加群杂质35的合成方法" [P]. 中国发明专利, 专利号 CN 109798324 A, 授权公告日 2019-05-01.
Roberts E F, Kumar R, Park J H. "Method for the Synthesis of Dabigatran Impurity 35" [P]. US Patent, US 10479499 B2, 2020-11-06.
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