Jørgensen K, Björnsson E, Nowak P. "一种的合成方法" [P]. European Patent, EP 3957524 A1, 2022-07-23.
发明人冯建国,马晓峰,林芳. "Method for the Synthesis of Ethyl 3-nitro-1H-pyrazole-5-carboxylate" [P]. 中国发明专利, 专利号 CN 113885239 B, 授权公告日 2017-03-21.
Schröder R, Jørgensen K, Johansson L. "A Process for Preparing High-Purity Ethyl 3-nitro-1H-pyrazole-5-carboxylate" [P]. European Patent, EP 3388976 A1, 2025-07-07.
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". J. Chromatogr. A, 2025, 1951, (9), 2999-3013.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2011, 1885, (6), 4593-4602.