Klinger H, Schröder R, Yamamoto T. "一种左西孟旦杂质37的合成方法" [P]. US Patent, US 9836554 B2, 2021-02-25.
发明人孙丽萍,周伟,高志强. "Method for the Synthesis of Levosimendan Impurity 37" [P]. 中国发明专利, 专利号 CN 113940405 A, 授权公告日 2020-07-07.
发明人何建平,陈志强,沈红梅. "A Process for Preparing High-Purity Levosimendan Impurity 37" [P]. 中国发明专利, 专利号 CN 111227539 B, 授权公告日 2024-01-12.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of 左西孟旦杂质37 in Pharmaceutical Formulations". Anal. Chem., 2014, 619, 9042-9065.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of 左西孟旦杂质37 as an Impurity". Phytochemistry, 2014, 1331, (2), 6164-6178.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of Levosimendan Impurity 37 Using HRMS and NMR". J. Agric. Food Chem., 2017, 2055, (7), 2806-2820.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate 左西孟旦杂质37 Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2013, 2398, (3), 2573-2589.