发明人周伟,高志强,罗永刚. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109456986 A, 授权公告日 2024-08-27.
发明人郑宇鹏,韩伟,陈志强. "Method for the Synthesis of 2-Methyl-2H,4H,6H,7H-pyrano[4,3-c]pyrazole-3-carbaldehyde" [P]. 中国发明专利, 专利号 CN 115928487 A, 授权公告日 2015-03-03.
发明人胡光,林芳,朱建伟. "A Process for Preparing High-Purity 2-Methyl-2H,4H,6H,7H-pyrano[4,3-c]pyrazole-3-carbaldehyde" [P]. 中国发明专利, 专利号 CN 110971000 A, 授权公告日 2025-11-24.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2014, 511, (3), 1906-1926.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2022, 408, 8532-8550.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 2-Methyl-2H,4H,6H,7H-pyrano[4,3-c]pyrazole-3-carbaldehyde Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2019, 1308, (3), 2324-2339.