发明人沈红梅,高志强,林芳. "Method for the Synthesis of N-(Aminoiminomethyl)-N′-methylthiourea" [P]. 中国发明专利, 专利号 CN 117215654 A, 授权公告日 2020-09-19.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of N/A in Pharmaceutical Formulations". Environ. Sci. Technol., 2017, 1256, (1), 9289-9298.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". J. Sep. Sci., 2011, 1354, (8), 9386-9411.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of N-(Aminoiminomethyl)-N′-methylthiourea Using HRMS and NMR". Chemosphere, 2014, 1629, (4), 630-647.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate N/A Profile in Drug Substances According to ICH Guidelines". Molecules, 2016, 1761, (5), 601-607.