Yamamoto T, Mueller T, Anderson J P. "Method for the Synthesis of 1-(7h-Purin-6-yl)piperidine-4-carboxylic acid" [P]. US Patent, US 11072486 B2, 2017-10-27.
Patel M V, Mueller T, Hughes D C. "A Process for Preparing High-Purity 1-(7h-Purin-6-yl)piperidine-4-carboxylic acid" [P]. US Patent, US 11177119 B2, 2023-03-27.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2010, 1289, (6), 4292-4298.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2024, 2209, (9), 9785-9811.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 1-(7h-Purin-6-yl)piperidine-4-carboxylic acid Using HRMS and NMR". J. Chromatogr. A, 2016, 1147, (12), 6956-6980.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2022, 1189, (3), 4086-4096.