发明人郑宇鹏,杨光,罗永刚. "一种奥沙拉秦EP杂质D的合成方法" [P]. 中国发明专利, 专利号 CN 113005650 A, 授权公告日 2023-05-01.
Mueller T, Chen K W, Hughes D C. "Method for the Synthesis of Olsalazine EP Impurity D" [P]. US Patent, US 10763821 B2, 2023-08-28.
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