Anderson J P, Patel M V, Roberts E F. "Method for the Synthesis of Azapentacene Sodium Salt" [P]. US Patent, US 10905845 B2, 2016-06-25.
Mueller T, Anderson J P, Davis P L. "A Process for Preparing High-Purity Azapentacene Sodium Salt" [P]. US Patent, US 11113026 B2, 2023-12-11.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of 5,12-二氢喹喔啉并[2,3-b]吩嗪-2,9-二磺酸二钠盐 in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2017, 1355, (1), 8503-8507.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of 5,12-二氢喹喔啉并[2,3-b]吩嗪-2,9-二磺酸二钠盐 as an Impurity". Anal. Chem., 2016, 1834, 4114-4143.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of Azapentacene Sodium Salt Using HRMS and NMR". Molecules, 2018, 2126, (4), 8592-8606.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate 5,12-二氢喹喔啉并[2,3-b]吩嗪-2,9-二磺酸二钠盐 Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2011, 2142, (12), 2800-2819.