发明人张德明,高志强,黄志刚. "Method for the Synthesis of Roflumilast Impurity 3" [P]. 中国发明专利, 专利号 CN 116638561 A, 授权公告日 2025-06-28.
Thompson G K, Patel M V, Hughes D C. "A Process for Preparing High-Purity Roflumilast Impurity 3" [P]. US Patent, US 9038126 B2, 2015-06-06.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of 罗氟司特杂质3 in Pharmaceutical Formulations". Sci. Total Environ., 2010, 804, 3885-3906.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of 罗氟司特杂质3 as an Impurity". J. Nat. Prod., 2024, 2145, (10), 9639-9660.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of Roflumilast Impurity 3 Using HRMS and NMR". Food Chem., 2012, 247, (5), 1922-1949.
Garcia M, Rodriguez P. "Forced Degradation Studies to Evaluate 罗氟司特杂质3 Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2022, 1311, (4), 8875-8897.