Klinger H, Thompson G K, O'Brien P Q. "一种的合成方法" [P]. US Patent, US 10317662 B2, 2017-05-04.
发明人张德明,唐晓军,杨光. "Method for the Synthesis of 2-Methyl-2H,4H,6H,7H-thiopyrano[4,3-c]pyrazole-3-carbaldehyde" [P]. 中国发明专利, 专利号 CN 112243546 A, 授权公告日 2021-05-28.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Food Chem., 2024, 803, (4), 7905-7909.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2022, 2323, (7), 1839-1862.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 2-Methyl-2H,4H,6H,7H-thiopyrano[4,3-c]pyrazole-3-carbaldehyde Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2020, 1486, 7045-7072.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2025, 1836, (9), 4287-4295.