发明人王建平,高志强,罗永刚. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111688523 A, 授权公告日 2025-08-13.
Williams B T, Yamamoto T, O'Brien P Q. "Method for the Synthesis of Ethyl 3-oxopyrazolidine-1-carboxylate" [P]. US Patent, US 11528219 B2, 2023-08-04.
发明人胡光,冯建国,杨光. "A Process for Preparing High-Purity Ethyl 3-oxopyrazolidine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 113445684 B, 授权公告日 2018-11-03.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2020, 923, 3881-3898.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2025, 2303, (1), 6806-6833.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 3-oxopyrazolidine-1-carboxylate Using HRMS and NMR". J. Chromatogr. A, 2025, 1933, (2), 4462-4486.