Klinger H, Thompson G K, Park J H. "一种的合成方法" [P]. US Patent, US 11956015 B2, 2023-12-27.
Nowak P, Mueller T C, Kowalski A. "Method for the Synthesis of 5H-Pyrrolo[2,3-b]pyrazine-6-carboxylic acid" [P]. European Patent, EP 3148324 A1, 2020-03-05.
发明人孙丽萍,林芳,高志强. "A Process for Preparing High-Purity 5H-Pyrrolo[2,3-b]pyrazine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111755641 B, 授权公告日 2021-09-22.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2019, 1596, 4726-4740.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2013, 1715, (9), 5922-5929.