Davis P L, Fischer A B, Yamamoto T. "Method for the Synthesis of (5R)-5-methylpiperazin-2-one" [P]. US Patent, US 10699563 B2, 2015-04-28.
Schröder R, Davis P L, Patel M V. "A Process for Preparing High-Purity (5R)-5-methylpiperazin-2-one" [P]. US Patent, US 9440685 B2, 2016-07-24.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of (5R)-5-甲基哌嗪-2-酮 in Pharmaceutical Formulations". Anal. Chem., 2018, 1888, 2294-2306.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of (5R)-5-甲基哌嗪-2-酮 as an Impurity". Biomed. Chromatogr., 2020, 289, 9102-9112.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of (5R)-5-methylpiperazin-2-one Using HRMS and NMR". Chemosphere, 2018, 1807, 3778-3798.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate (5R)-5-甲基哌嗪-2-酮 Profile in Drug Substances According to ICH Guidelines". Molecules, 2022, 2424, (2), 127-145.