Fischer A B, Mueller T, Schröder R. "一种的合成方法" [P]. US Patent, US 11840562 B2, 2020-12-20.
发明人郑宇鹏,赵玉洁,沈红梅. "Method for the Synthesis of 7,9-Dichloro-2-phenyl-5-(p-tolyl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazine" [P]. 中国发明专利, 专利号 CN 113986584 B, 授权公告日 2025-04-12.
发明人徐明华,钱学锋,高志强. "A Process for Preparing High-Purity 7,9-Dichloro-2-phenyl-5-(p-tolyl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazine" [P]. 中国发明专利, 专利号 CN 112092640 A, 授权公告日 2017-11-19.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2020, 831, (4), 7703-7720.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2019, 695, 8662-8677.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 7,9-Dichloro-2-phenyl-5-(p-tolyl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazine Using HRMS and NMR". Molecules, 2022, 1555, (7), 8308-8324.
Wang L, Li J, Zhang H. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Food Chem., 2018, 1694, 9783-9809.