Mueller T, Thompson G K, Anderson J P. "Method for the Synthesis of 5-((Diethoxyphosphoryl)difluoromethyl)-1H-indole-2-carboxylic acid" [P]. US Patent, US 10505608 B2, 2020-07-06.
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". Environ. Sci. Technol., 2015, 761, (3), 5948-5963.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2014, 2059, (1), 2315-2333.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 5-((Diethoxyphosphoryl)difluoromethyl)-1H-indole-2-carboxylic acid Using HRMS and NMR". J. Chromatogr. A, 2019, 207, (11), 9145-9171.
Wang L, Li J, Zhang H. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2014, 759, (3), 4965-4985.