Stevens L M, Kumar R, Brown S R. "Method for the Synthesis of 3-((4-Chlorophenyl)sulfonyl)-2-imino-10-methyl-1-propyl-1H-dipyrido[1,2-a:2',3'-d]pyrimidin-5(2H)-one" [P]. US Patent, US 10423773 B2, 2025-07-17.
Stevens L M, Brown S R, Mueller T. "A Process for Preparing High-Purity 3-((4-Chlorophenyl)sulfonyl)-2-imino-10-methyl-1-propyl-1H-dipyrido[1,2-a:2',3'-d]pyrimidin-5(2H)-one" [P]. US Patent, US 9623427 B2, 2015-04-25.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2012, 1774, (2), 3747-3773.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2014, 1307, 6823-6832.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 3-((4-Chlorophenyl)sulfonyl)-2-imino-10-methyl-1-propyl-1H-dipyrido[1,2-a:2',3'-d]pyrimidin-5(2H)-one Using HRMS and NMR". J. Nat. Prod., 2023, 664, 4249-4261.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2011, 1771, (5), 535-560.