发明人林芳,钱学锋,孙丽萍. "Method for the Synthesis of 6'-(Diethylamino)-3'-methyl-3-oxo-2'-(phenylamino)-3H-spiro[isobenzofuran-1,9'-xanthene]-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111126917 B, 授权公告日 2017-04-07.
Fischer A B, Mueller T, Anderson J P. "A Process for Preparing High-Purity 6'-(Diethylamino)-3'-methyl-3-oxo-2'-(phenylamino)-3H-spiro[isobenzofuran-1,9'-xanthene]-5-carboxylic acid" [P]. US Patent, US 11978670 B2, 2016-10-26.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2020, 1876, 7803-7812.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2017, 2089, (4), 3493-3510.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 6'-(Diethylamino)-3'-methyl-3-oxo-2'-(phenylamino)-3H-spiro[isobenzofuran-1,9'-xanthene]-5-carboxylic acid Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2018, 481, 2256-2278.