Park J H, Yamamoto T, Mueller T. "Method for the Synthesis of 6-carbamoyl-7,8-dihydro-3H-pyrrolo[3,2-e]indole-2-carboxylic acid" [P]. US Patent, US 10214230 B2, 2021-07-27.
Park J H, Patel M V, Hughes D C. "A Process for Preparing High-Purity 6-carbamoyl-7,8-dihydro-3H-pyrrolo[3,2-e]indole-2-carboxylic acid" [P]. US Patent, US 10944749 B2, 2019-08-17.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2016, 377, 8200-8215.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2019, 1148, 1220-1234.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 6-carbamoyl-7,8-dihydro-3H-pyrrolo[3,2-e]indole-2-carboxylic acid Using HRMS and NMR". J. Nat. Prod., 2012, 2099, (7), 6307-6316.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2023, 596, (2), 1813-1825.