Patel M V, Stevens L M, Mueller T. "一种的合成方法" [P]. US Patent, US 9568441 B2, 2017-06-01.
Park J H, Davis P L, Mueller T. "Method for the Synthesis of 1,2-Dimethylpyrazolidine-4-carbonitrile" [P]. US Patent, US 11027318 B2, 2021-05-17.
发明人高志强,胡光,赵玉洁. "A Process for Preparing High-Purity 1,2-Dimethylpyrazolidine-4-carbonitrile" [P]. 中国发明专利, 专利号 CN 115348446 B, 授权公告日 2016-01-11.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Food Chem., 2014, 2251, (2), 8229-8259.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2012, 1294, (5), 5366-5374.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 1,2-Dimethylpyrazolidine-4-carbonitrile Using HRMS and NMR". Environ. Sci. Technol., 2020, 2012, 636-642.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2011, 2142, 6408-6425.