Stevens L M, Brown S R, Patel M V. "一种的合成方法" [P]. US Patent, US 10277326 B2, 2019-09-08.
Schröder R, Jørgensen K, Björnsson E. "Method for the Synthesis of 2-Amino-5,7-diazaspiro[3.4]Octane-6,8-dione" [P]. European Patent, EP 3705775 A1, 2020-06-12.
Klinger H, Hughes D C, Lee S K. "A Process for Preparing High-Purity 2-Amino-5,7-diazaspiro[3.4]Octane-6,8-dione" [P]. US Patent, US 9499953 B2, 2022-06-25.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2020, 476, (6), 2756-2770.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2010, 131, (2), 4249-4263.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 2-Amino-5,7-diazaspiro[3.4]Octane-6,8-dione Using HRMS and NMR". Anal. Chim. Acta, 2011, 2103, 6670-6682.