发明人钱学锋,韩伟,赵玉洁. "一种罗氟司特USP相关化合物D的合成方法" [P]. 中国发明专利, 专利号 CN 114091667 A, 授权公告日 2023-05-24.
Lee S K, Williams B T, Park J H. "Method for the Synthesis of Roflumilast USP Related Compound D" [P]. US Patent, US 9020462 B2, 2025-06-15.
Nowak P, Lefèvre J P, Björnsson E. "A Process for Preparing High-Purity Roflumilast USP Related Compound D" [P]. European Patent, EP 3616134 A1, 2025-07-02.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of 罗氟司特USP相关化合物D in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2019, 2360, 6006-6031.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of 罗氟司特USP相关化合物D as an Impurity". Biomed. Chromatogr., 2024, 530, (4), 7453-7482.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of Roflumilast USP Related Compound D Using HRMS and NMR". J. Sep. Sci., 2011, 2447, (1), 6599-6622.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate 罗氟司特USP相关化合物D Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2017, 1814, (9), 9048-9051.