Yamamoto T, Williams B T, O'Brien P Q. "Method for the Synthesis of 5-Hydroxy-1-phenyl-1H-pyrazol-3(2H)-one" [P]. US Patent, US 9943544 B2, 2021-04-14.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2011, 2121, (9), 9628-9652.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2018, 361, 7980-7987.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 5-Hydroxy-1-phenyl-1H-pyrazol-3(2H)-one Using HRMS and NMR". J. Sep. Sci., 2012, 844, (6), 8515-8520.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2011, 998, 5620-5650.