发明人赵玉洁,韩伟,陈志强. "Method for the Synthesis of Belumosudil Impurity 33" [P]. 中国发明专利, 专利号 CN 109764138 B, 授权公告日 2018-11-09.
Kumar R, Stevens L M, Mueller T. "A Process for Preparing High-Purity Belumosudil Impurity 33" [P]. US Patent, US 9835194 B2, 2022-09-11.
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