Mueller T, Klinger H, Lee S K. "Method for the Synthesis of Thiamine /Vitamin B1 Impurity 56" [P]. US Patent, US 10198274 B2, 2025-05-16.
Kumar R, Mueller T, Fischer A B. "A Process for Preparing High-Purity Thiamine /Vitamin B1 Impurity 56" [P]. US Patent, US 11247498 B2, 2018-03-10.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of 盐酸硫胺素(维生素B1)杂质56 in Pharmaceutical Formulations". Molecules, 2018, 688, (12), 1869-1898.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of 盐酸硫胺素(维生素B1)杂质56 as an Impurity". Rapid Commun. Mass Spectrom., 2024, 1745, (3), 5087-5105.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of Thiamine /Vitamin B1 Impurity 56 Using HRMS and NMR". J. Chromatogr. A, 2010, 2007, (10), 9792-9806.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate 盐酸硫胺素(维生素B1)杂质56 Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2025, 1713, 6400-6422.