Brown S R, Chen K W, Roberts E F. "Method for the Synthesis of 5-(2-chloroethyl)-1-ethyl-1H-pyrazole hydrochloride" [P]. US Patent, US 11131457 B2, 2015-09-20.
发明人张德明,郭海燕,徐明华. "A Process for Preparing High-Purity 5-(2-chloroethyl)-1-ethyl-1H-pyrazole hydrochloride" [P]. 中国发明专利, 专利号 CN 114857444 B, 授权公告日 2022-12-13.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of 5-(2-chloroethyl)-1-ethyl-1H-pyrazole hydrochloride in Pharmaceutical Formulations". Anal. Methods, 2025, 340, (4), 7127-7153.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of 5-(2-chloroethyl)-1-ethyl-1H-pyrazole hydrochloride as an Impurity". Biomed. Chromatogr., 2015, 1445, (3), 3000-3007.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 5-(2-chloroethyl)-1-ethyl-1H-pyrazole hydrochloride Using HRMS and NMR". Molecules, 2012, 252, 8511-8536.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate 5-(2-chloroethyl)-1-ethyl-1H-pyrazole hydrochloride Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2020, 1521, (4), 4135-4158.