发明人沈红梅,胡光,韩伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110667761 A, 授权公告日 2016-06-22.
发明人郭海燕,朱建伟,杨光. "Method for the Synthesis of 3-(((4-Isopropylphenyl)amino)methylene)-6-methyl-2H-pyran-2,4(3H)-dione" [P]. 中国发明专利, 专利号 CN 112770246 A, 授权公告日 2016-03-27.
发明人刘建华,沈红梅,钱学锋. "A Process for Preparing High-Purity 3-(((4-Isopropylphenyl)amino)methylene)-6-methyl-2H-pyran-2,4(3H)-dione" [P]. 中国发明专利, 专利号 CN 112996879 A, 授权公告日 2015-07-28.
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". Phytochemistry, 2021, 623, 96-111.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2022, 306, (8), 3081-3109.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 3-(((4-Isopropylphenyl)amino)methylene)-6-methyl-2H-pyran-2,4(3H)-dione Using HRMS and NMR". Anal. Chem., 2024, 1043, (11), 9272-9300.