Patel M V, Davis P L, Williams B T. "Method for the Synthesis of 4-Chloro-5-(ethylthio)-2-phenylpyridazin-3(2H)-one" [P]. US Patent, US 11422456 B2, 2025-07-12.
Lefèvre J P, Kowalski A, Martínez F. "A Process for Preparing High-Purity 4-Chloro-5-(ethylthio)-2-phenylpyridazin-3(2H)-one" [P]. European Patent, EP 3918251 A1, 2023-01-27.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2014, 2021, 4554-4567.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2022, 554, (2), 4018-4033.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 4-Chloro-5-(ethylthio)-2-phenylpyridazin-3(2H)-one Using HRMS and NMR". J. Sep. Sci., 2020, 1165, (1), 2155-2178.