Chen K W, Schröder R, Brown S R. "一种6-(叔丁氧羰基氨基)-1H吲哚-4-甲酸的合成方法" [P]. US Patent, US 9995948 B2, 2018-02-20.
Johnson M A, Brown S R, Yamamoto T. "Method for the Synthesis of 6-((tert-Butoxycarbonyl)amino)-1h-indole-4-carboxylicacid" [P]. US Patent, US 10870547 B2, 2023-09-10.
Chen K W, Thompson G K, Klinger H. "A Process for Preparing High-Purity 6-((tert-Butoxycarbonyl)amino)-1h-indole-4-carboxylicacid" [P]. US Patent, US 9057321 B2, 2021-08-16.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of 6-(叔丁氧羰基氨基)-1H吲哚-4-甲酸 in Pharmaceutical Formulations". Anal. Chim. Acta, 2014, 2128, (6), 1824-1837.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of 6-(叔丁氧羰基氨基)-1H吲哚-4-甲酸 as an Impurity". J. Chromatogr. A, 2011, 1248, (12), 4242-4267.