O'Brien P Q, Anderson J P, Johnson M A. "一种的合成方法" [P]. US Patent, US 9943826 B2, 2021-03-22.
Johnson M A, Mueller T, Roberts E F. "Method for the Synthesis of (E)-2-Cyano-3-(5-(9,9-diethyl-7-(naphthalen-1-yl(phenyl)amino)-9H-fluoren-2-yl)thiophen-2-yl)acrylic acid" [P]. US Patent, US 11526182 B2, 2021-06-06.
Nielsen H, Kowalski A, Schröder R. "A Process for Preparing High-Purity (E)-2-Cyano-3-(5-(9,9-diethyl-7-(naphthalen-1-yl(phenyl)amino)-9H-fluoren-2-yl)thiophen-2-yl)acrylic acid" [P]. European Patent, EP 3760600 A1, 2023-04-24.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2019, 1748, (2), 1922-1927.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2013, 2315, (11), 8901-8925.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of (E)-2-Cyano-3-(5-(9,9-diethyl-7-(naphthalen-1-yl(phenyl)amino)-9H-fluoren-2-yl)thiophen-2-yl)acrylic acid Using HRMS and NMR". Anal. Methods, 2013, 1129, (5), 3305-3329.