Mueller T, Lee S K, Anderson J P. "Method for the Synthesis of Ensifentrine impurity 37" [P]. US Patent, US 9915598 B2, 2018-05-18.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of 恩司芬群杂质37 in Pharmaceutical Formulations". Chemosphere, 2012, 740, (4), 256-264.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of 恩司芬群杂质37 as an Impurity". Sci. Total Environ., 2023, 205, 2754-2757.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of Ensifentrine impurity 37 Using HRMS and NMR". Food Chem., 2019, 2302, (4), 8833-8854.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate 恩司芬群杂质37 Profile in Drug Substances According to ICH Guidelines". Talanta, 2022, 1312, 7576-7583.