噻吗洛尔EP杂质C 马来酸盐(英文名 Timolol EP Impurity C Maleate,CAS 610271-57-3)属于药物杂质对照品。分子式 C19H31N7O4S2 C4H4O4。纯度 >95%。佳途科技作为 ISO 17034 认可的标准物质生产商,为该产品提供完整的质量文件与技术支持。
Kumar R, Klinger H, Johnson M A. "Method for the Synthesis of Timolol EP Impurity C Maleate" [P]. US Patent, US 11217099 B2, 2020-10-23.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of 噻吗洛尔EP杂质C 马来酸盐 in Pharmaceutical Formulations". J. Chromatogr. A, 2019, 389, (5), 371-398.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of 噻吗洛尔EP杂质C 马来酸盐 as an Impurity". Food Chem., 2024, 1638, 2291-2319.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of Timolol EP Impurity C Maleate Using HRMS and NMR". Talanta, 2024, 396, 857-868.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate 噻吗洛尔EP杂质C 马来酸盐 Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2016, 1557, (8), 8735-8750.