发明人周伟,马晓峰,沈红梅. "一种西尼莫德杂质31的合成方法" [P]. 中国发明专利, 专利号 CN 108024351 A, 授权公告日 2021-04-25.
发明人杨光,罗永刚,钱学锋. "Method for the Synthesis of Siponimod Impurity 31" [P]. 中国发明专利, 专利号 CN 115336877 B, 授权公告日 2018-12-23.
发明人张德明,何建平,胡光. "A Process for Preparing High-Purity Siponimod Impurity 31" [P]. 中国发明专利, 专利号 CN 116454514 B, 授权公告日 2022-10-28.
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