Schröder R, Davis P L, Roberts E F. "Method for the Synthesis of 4-(2-Ethoxy-2-oxoethylidene)cyclohexane-1-carboxylic acid" [P]. US Patent, US 11146859 B2, 2017-08-26.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2025, 282, (8), 3490-3516.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2011, 2001, (12), 4424-4436.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 4-(2-Ethoxy-2-oxoethylidene)cyclohexane-1-carboxylic acid Using HRMS and NMR". Biomed. Chromatogr., 2015, 462, (2), 335-365.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2015, 977, (4), 1614-1617.