Nowak P, Schröder R, Nielsen H. "Method for the Synthesis of 7-Methyl-4-oxo-4H-chromene-2-carbonitrile" [P]. European Patent, EP 3555440 A1, 2016-03-08.
Williams B T, Roberts E F, Davis P L. "A Process for Preparing High-Purity 7-Methyl-4-oxo-4H-chromene-2-carbonitrile" [P]. US Patent, US 9117413 B2, 2018-03-27.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2012, 696, 961-965.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2019, 1301, 9452-9461.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 7-Methyl-4-oxo-4H-chromene-2-carbonitrile Using HRMS and NMR". Anal. Chem., 2021, 1005, (7), 2991-2998.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Food Chem., 2025, 280, (4), 5146-5150.