Park J H, Stevens L M, Lee S K. "Method for the Synthesis of 4-Cyclobutyl-2-(methylsulfonyl)pyrimidine-5-carboxylic acid" [P]. US Patent, US 11245509 B2, 2016-05-04.
发明人黄志刚,马晓峰,李文辉. "A Process for Preparing High-Purity 4-Cyclobutyl-2-(methylsulfonyl)pyrimidine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116306055 B, 授权公告日 2021-10-06.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of 4-环丁基-2-(甲基磺酰基)嘧啶-5-羧酸 in Pharmaceutical Formulations". Food Chem., 2013, 1656, 3851-3855.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of 4-环丁基-2-(甲基磺酰基)嘧啶-5-羧酸 as an Impurity". Chemosphere, 2022, 1963, 2228-2252.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 4-Cyclobutyl-2-(methylsulfonyl)pyrimidine-5-carboxylic acid Using HRMS and NMR". Anal. Chem., 2012, 2447, (10), 2847-2855.