Anderson J P, Stevens L M, Fischer A B. "Method for the Synthesis of Levothyroxine Impurity N90" [P]. US Patent, US 10493187 B2, 2015-04-24.
发明人李文辉,孙丽萍,何建平. "A Process for Preparing High-Purity Levothyroxine Impurity N90" [P]. 中国发明专利, 专利号 CN 109983440 B, 授权公告日 2025-04-12.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of 左甲状腺素杂质N90 in Pharmaceutical Formulations". Anal. Chem., 2011, 912, (12), 8419-8439.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of 左甲状腺素杂质N90 as an Impurity". Biomed. Chromatogr., 2023, 2209, (4), 1613-1643.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of Levothyroxine Impurity N90 Using HRMS and NMR". Chromatographia, 2012, 1457, 2803-2832.