发明人罗永刚,钱学锋,马晓峰. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117216609 A, 授权公告日 2021-05-08.
发明人郭海燕,胡光,杨光. "Method for the Synthesis of 4-Butyl-5-oxo-1,2-diphenyl-2,5-dihydro-1H-pyrazol-3-yl thiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 113324607 B, 授权公告日 2020-09-26.
发明人王建平,孙丽萍,罗永刚. "A Process for Preparing High-Purity 4-Butyl-5-oxo-1,2-diphenyl-2,5-dihydro-1H-pyrazol-3-yl thiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 113792376 A, 授权公告日 2025-07-18.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2018, 1916, (10), 977-1006.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2017, 643, 9222-9237.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of 4-Butyl-5-oxo-1,2-diphenyl-2,5-dihydro-1H-pyrazol-3-yl thiophene-2-carboxylate Using HRMS and NMR". Anal. Chim. Acta, 2018, 947, (6), 9625-9636.