Yamamoto T, Williams B T, Fischer A B. "Method for the Synthesis of 4-(1,1-Dimethylethyl) Ester 2,4-Morpholinedicarboxylic Acid" [P]. US Patent, US 9019198 B2, 2025-06-15.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2019, 1787, (1), 4084-4097.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2024, 1213, (8), 4840-4851.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 4-(1,1-Dimethylethyl) Ester 2,4-Morpholinedicarboxylic Acid Using HRMS and NMR". Anal. Chim. Acta, 2019, 1173, (2), 4230-4247.