Stevens L M, Kumar R, Yamamoto T. "一种赛庚啶USP相关化合物A的合成方法" [P]. US Patent, US 10698205 B2, 2016-03-21.
Klinger H, Roberts E F, Mueller T. "Method for the Synthesis of Cyproheptadine EP Impurity A" [P]. US Patent, US 11721444 B2, 2015-08-23.
Sørensen M, Martínez F, Björnsson E. "A Process for Preparing High-Purity Cyproheptadine EP Impurity A" [P]. European Patent, EP 3321624 A1, 2025-03-09.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of 赛庚啶USP相关化合物A in Pharmaceutical Formulations". Chemosphere, 2019, 1597, (2), 3637-3667.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of 赛庚啶USP相关化合物A as an Impurity". J. Chromatogr. A, 2014, 716, (10), 3501-3518.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of Cyproheptadine EP Impurity A Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2010, 818, (11), 4497-4525.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate 赛庚啶USP相关化合物A Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2021, 1901, (8), 8850-8866.