Sørensen M, Kowalski A, Nowak P. "一种5(6)-羧基荧光素的合成方法" [P]. European Patent, EP 3683470 A1, 2017-11-21.
Johnson M A, Chen K W, Lee S K. "Method for the Synthesis of 3',6'-Dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-5(6)-carboxylic acid" [P]. US Patent, US 11888320 B2, 2021-02-17.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of 5(6)-羧基荧光素 in Pharmaceutical Formulations". Anal. Chim. Acta, 2015, 2013, 1118-1146.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of 5(6)-羧基荧光素 as an Impurity". Talanta, 2021, 363, (6), 2820-2835.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 3',6'-Dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-5(6)-carboxylic acid Using HRMS and NMR". Molecules, 2023, 1880, (4), 6616-6635.