Yamamoto T, Johnson M A, Anderson J P. "一种的合成方法" [P]. US Patent, US 10785125 B2, 2019-03-16.
发明人罗永刚,孙丽萍,朱建伟. "Method for the Synthesis of Carbonic acid, polymer with 1,3-dihydro-3,3-bis(4-hydroxy-3-methylphenyl)-2H-indol-2-one and 4,4'-(1-methylethylidene)bis[phenol]" [P]. 中国发明专利, 专利号 CN 108962228 A, 授权公告日 2022-08-17.
发明人王建平,韩伟,周伟. "A Process for Preparing High-Purity Carbonic acid, polymer with 1,3-dihydro-3,3-bis(4-hydroxy-3-methylphenyl)-2H-indol-2-one and 4,4'-(1-methylethylidene)bis[phenol]" [P]. 中国发明专利, 专利号 CN 113316344 A, 授权公告日 2024-10-13.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2011, 1068, 6193-6213.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2013, 1404, 5033-5059.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of Carbonic acid, polymer with 1,3-dihydro-3,3-bis(4-hydroxy-3-methylphenyl)-2H-indol-2-one and 4,4'-(1-methylethylidene)bis[phenol] Using HRMS and NMR". Biomed. Chromatogr., 2013, 958, (8), 1289-1313.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2023, 399, 1598-1626.