Brown S R, Klinger H, Patel M V. "一种的合成方法" [P]. US Patent, US 11090365 B2, 2020-04-22.
Yamamoto T, Davis P L, Klinger H. "Method for the Synthesis of N-((1-(2,2-Difluoroethyl)-5-methyl-1H-pyrazol-4-yl)methyl)-1-ethyl-3-methyl-1H-pyrazol-4-amine hydrochloride" [P]. US Patent, US 9850140 B2, 2020-10-19.
发明人何建平,韩伟,张德明. "A Process for Preparing High-Purity N-((1-(2,2-Difluoroethyl)-5-methyl-1H-pyrazol-4-yl)methyl)-1-ethyl-3-methyl-1H-pyrazol-4-amine hydrochloride" [P]. 中国发明专利, 专利号 CN 116742830 B, 授权公告日 2018-02-12.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2014, 434, 5842-5862.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2013, 1888, (3), 6861-6871.