发明人沈红梅,冯建国,王建平. "Method for the Synthesis of Cyanocobalamin /Vitamin B12 Impurity 22" [P]. 中国发明专利, 专利号 CN 116698857 B, 授权公告日 2015-12-06.
Kowalski A, Rossi M, Johansson L. "A Process for Preparing High-Purity Cyanocobalamin /Vitamin B12 Impurity 22" [P]. European Patent, EP 3684380 A1, 2025-02-26.
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 维生素B12杂质22 in Pharmaceutical Formulations". Talanta, 2010, 85, (7), 9847-9868.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of 维生素B12杂质22 as an Impurity". J. Chromatogr. A, 2021, 313, 1708-1728.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of Cyanocobalamin /Vitamin B12 Impurity 22 Using HRMS and NMR". Environ. Sci. Technol., 2020, 1163, (7), 1993-2013.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate 维生素B12杂质22 Profile in Drug Substances According to ICH Guidelines". Molecules, 2022, 2142, 1184-1213.