Thompson G K, Johnson M A, Williams B T. "Method for the Synthesis of 2-methylidenebutanedioic acid- ethyl prop-2-enoate(1:1)
31462-59-6
AR-1E3987" [P]. US Patent, US 10870010 B2, 2019-02-25.
发明人何建平,罗永刚,高志强. "A Process for Preparing High-Purity 2-methylidenebutanedioic acid- ethyl prop-2-enoate(1:1)
31462-59-6
AR-1E3987" [P]. 中国发明专利, 专利号 CN 109423293 A, 授权公告日 2017-05-19.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of 4-Pyrimidinecarboxylic acid in Pharmaceutical Formulations". J. Chromatogr. A, 2010, 892, (3), 4963-4969.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of 4-Pyrimidinecarboxylic acid as an Impurity". Environ. Sci. Technol., 2022, 2266, 1368-1380.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 2-methylidenebutanedioic acid- ethyl prop-2-enoate(1:1)
31462-59-6
AR-1E3987 Using HRMS and NMR". Biomed. Chromatogr., 2011, 1541, (7), 1778-1803.