发明人徐明华,冯建国,高志强. "Method for the Synthesis of Eltrombopag Impurity 56" [P]. 中国发明专利, 专利号 CN 114043562 A, 授权公告日 2018-04-25.
Hughes D C, Schröder R, Stevens L M. "A Process for Preparing High-Purity Eltrombopag Impurity 56" [P]. US Patent, US 9046648 B2, 2018-12-05.
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