Schröder R, O'Brien P Q, Stevens L M. "Method for the Synthesis of 4,6,7-Trimethyl-2-oxo-2H-chromene-3-carbonitrile" [P]. US Patent, US 11247584 B2, 2024-09-10.
发明人胡光,周伟,陈志强. "A Process for Preparing High-Purity 4,6,7-Trimethyl-2-oxo-2H-chromene-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 116176278 A, 授权公告日 2019-10-01.
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". Anal. Methods, 2011, 2164, (10), 6612-6631.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2016, 991, (4), 8542-8554.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 4,6,7-Trimethyl-2-oxo-2H-chromene-3-carbonitrile Using HRMS and NMR". J. Chromatogr. A, 2025, 1040, 2862-2892.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chem., 2025, 817, 9823-9852.