Chen K W, Brown S R, Schröder R. "一种(2Z)-2-cyano-3-[1-(2-cyanoethyl)-3-(3,4-dimethoxyphenyl)-1H-pyrazol-4-yl]acrylic acid的合成方法" [P]. US Patent, US 10740835 B2, 2019-01-19.
发明人徐明华,刘建华,罗永刚. "Method for the Synthesis of (2Z)-2-cyano-3-[1-(2-cyanoethyl)-3-(3,4-dimethoxyphenyl)-1H-pyrazol-4-yl]acrylic acid" [P]. 中国发明专利, 专利号 CN 116939431 A, 授权公告日 2019-07-16.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of (2Z)-2-cyano-3-[1-(2-cyanoethyl)-3-(3,4-dimethoxyphenyl)-1H-pyrazol-4-yl]acrylic acid in Pharmaceutical Formulations". Talanta, 2014, 1742, (3), 8971-8997.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of (2Z)-2-cyano-3-[1-(2-cyanoethyl)-3-(3,4-dimethoxyphenyl)-1H-pyrazol-4-yl]acrylic acid as an Impurity". Environ. Sci. Technol., 2015, 2297, 7489-7508.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of (2Z)-2-cyano-3-[1-(2-cyanoethyl)-3-(3,4-dimethoxyphenyl)-1H-pyrazol-4-yl]acrylic acid Using HRMS and NMR". Food Chem., 2020, 474, (7), 2309-2331.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate (2Z)-2-cyano-3-[1-(2-cyanoethyl)-3-(3,4-dimethoxyphenyl)-1H-pyrazol-4-yl]acrylic acid Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2022, 211, 6351-6373.