Johansson L, Rossi M, Mueller T C. "一种的合成方法" [P]. European Patent, EP 3875714 A1, 2018-10-06.
Fischer A B, Thompson G K, Hughes D C. "Method for the Synthesis of 1-Methyl-6-oxo-1,6-dihydropyridazine-3-carbonyl chloride" [P]. US Patent, US 10035649 B2, 2019-03-01.
发明人张德明,唐晓军,钱学锋. "A Process for Preparing High-Purity 1-Methyl-6-oxo-1,6-dihydropyridazine-3-carbonyl chloride" [P]. 中国发明专利, 专利号 CN 109556417 A, 授权公告日 2021-05-09.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2025, 482, (5), 9349-9375.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2022, 2348, (9), 1252-1259.