Roberts E F, Yamamoto T, Klinger H. "Method for the Synthesis of 1-((1-Cyclohexyl-1H-tetrazol-5-yl)methyl)-3-(thiophen-2-ylmethyl)urea" [P]. US Patent, US 9811148 B2, 2022-02-09.
发明人李文辉,周伟,刘建华. "A Process for Preparing High-Purity 1-((1-Cyclohexyl-1H-tetrazol-5-yl)methyl)-3-(thiophen-2-ylmethyl)urea" [P]. 中国发明专利, 专利号 CN 117268887 B, 授权公告日 2017-12-01.
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". Molecules, 2021, 2135, (12), 2723-2743.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2013, 2205, (10), 2203-2212.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 1-((1-Cyclohexyl-1H-tetrazol-5-yl)methyl)-3-(thiophen-2-ylmethyl)urea Using HRMS and NMR". J. Chromatogr. A, 2010, 2294, (2), 2871-2879.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2010, 1011, (6), 759-781.