发明人唐晓军,赵玉洁,沈红梅. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111892615 A, 授权公告日 2019-09-02.
发明人郑宇鹏,王建平,胡光. "Method for the Synthesis of 5-(Butylamino)-1,3-dimethyl-1h-pyrazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109879316 A, 授权公告日 2019-04-18.
发明人何建平,郭海燕,高志强. "A Process for Preparing High-Purity 5-(Butylamino)-1,3-dimethyl-1h-pyrazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112873620 A, 授权公告日 2020-06-04.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2016, 1680, (6), 3647-3656.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2017, 2061, (10), 3234-3258.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 5-(Butylamino)-1,3-dimethyl-1h-pyrazole-4-carboxylic acid Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2015, 696, (6), 4389-4412.