Brown S R, Park J H, Thompson G K. "Method for the Synthesis of 2,4-Difluoro-6-nitrocinnamic acid" [P]. US Patent, US 10445073 B2, 2023-03-18.
Patel M V, Stevens L M, Fischer A B. "A Process for Preparing High-Purity 2,4-Difluoro-6-nitrocinnamic acid" [P]. US Patent, US 9881837 B2, 2022-12-06.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2013, 1484, 5983-6008.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2022, 991, 3407-3413.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 2,4-Difluoro-6-nitrocinnamic acid Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2015, 2379, 1570-1599.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chem., 2014, 1457, 2827-2856.