O'Brien P Q, Patel M V, Schröder R. "Method for the Synthesis of 4,5-dimethoxy-2-{[(2-methylcyclopropyl)carbonyl]amino}benzoic acid" [P]. US Patent, US 10060309 B2, 2021-05-07.
Schröder R, Mueller T C, Jørgensen K. "A Process for Preparing High-Purity 4,5-dimethoxy-2-{[(2-methylcyclopropyl)carbonyl]amino}benzoic acid" [P]. European Patent, EP 3887266 A1, 2023-02-27.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of 4,5-dimethoxy-2-{[(2-methylcyclopropyl)carbonyl]amino}benzoic acid in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2016, 2104, 8061-8091.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of 4,5-dimethoxy-2-{[(2-methylcyclopropyl)carbonyl]amino}benzoic acid as an Impurity". J. Pharm. Biomed. Anal., 2011, 1528, (2), 5152-5165.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 4,5-dimethoxy-2-{[(2-methylcyclopropyl)carbonyl]amino}benzoic acid Using HRMS and NMR". Sci. Total Environ., 2017, 929, (10), 6013-6043.