发明人马晓峰,黄志刚,张德明. "一种左甲状腺素杂质18的合成方法" [P]. 中国发明专利, 专利号 CN 113429337 A, 授权公告日 2015-06-07.
发明人胡光,罗永刚,唐晓军. "Method for the Synthesis of Levothyroxine Impurity 18" [P]. 中国发明专利, 专利号 CN 115298191 A, 授权公告日 2016-10-28.
发明人杨光,罗永刚,马晓峰. "A Process for Preparing High-Purity Levothyroxine Impurity 18" [P]. 中国发明专利, 专利号 CN 113986484 B, 授权公告日 2022-10-27.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of 左甲状腺素杂质18 in Pharmaceutical Formulations". Molecules, 2014, 1423, (5), 4978-4987.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of 左甲状腺素杂质18 as an Impurity". Anal. Chim. Acta, 2019, 404, (8), 9034-9044.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of Levothyroxine Impurity 18 Using HRMS and NMR". J. Agric. Food Chem., 2012, 1414, (5), 9110-9115.