Park J H, O'Brien P Q, Williams B T. "一种的合成方法" [P]. US Patent, US 9899314 B2, 2021-01-22.
Schröder R, Patel M V, Mueller T. "Method for the Synthesis of 9-Ethyl-9h-carbazole-3,6-dicarboxylic acid" [P]. US Patent, US 11178740 B2, 2023-06-23.
发明人郭海燕,冯建国,朱建伟. "A Process for Preparing High-Purity 9-Ethyl-9h-carbazole-3,6-dicarboxylic acid" [P]. 中国发明专利, 专利号 CN 116485339 B, 授权公告日 2019-12-05.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2012, 1537, 2552-2555.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2020, 827, 1656-1668.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 9-Ethyl-9h-carbazole-3,6-dicarboxylic acid Using HRMS and NMR". Anal. Methods, 2019, 747, 8912-8933.