Johnson M A, Davis P L, Schröder R. "Method for the Synthesis of 4-((Dimethylamino)methylene)-5-(methoxymethyl)-2,4-dihydro-3H-pyrazol-3-one" [P]. US Patent, US 10357404 B2, 2015-05-23.
发明人王建平,周伟,胡光. "A Process for Preparing High-Purity 4-((Dimethylamino)methylene)-5-(methoxymethyl)-2,4-dihydro-3H-pyrazol-3-one" [P]. 中国发明专利, 专利号 CN 116976386 B, 授权公告日 2020-07-08.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2014, 1188, (1), 6204-6231.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2025, 622, 4118-4122.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 4-((Dimethylamino)methylene)-5-(methoxymethyl)-2,4-dihydro-3H-pyrazol-3-one Using HRMS and NMR". J. Nat. Prod., 2012, 1911, 8012-8032.