发明人孙丽萍,刘建华,沈红梅. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109808742 A, 授权公告日 2021-08-04.
发明人张德明,黄志刚,胡光. "Method for the Synthesis of 4-(Methyl-d" [P]. 中国发明专利, 专利号 CN 113002518 B, 授权公告日 2021-02-23.
Chen K W, Schröder R, Brown S R. "A Process for Preparing High-Purity 4-(Methyl-d" [P]. US Patent, US 11142678 B2, 2017-04-06.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2017, 333, 3857-3878.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2014, 1945, 9919-9926.