Björnsson E, Lefèvre J P, Nielsen H. "一种的合成方法" [P]. European Patent, EP 3317750 A1, 2022-04-08.
Nowak P, Martínez F, Jørgensen K. "Method for the Synthesis of 2,2-Dimethyl-6-nitro-2H-benzo[b][1,4]oxazine-3(4H)-thione" [P]. European Patent, EP 3074840 A1, 2024-06-13.
Stevens L M, Kumar R, Yamamoto T. "A Process for Preparing High-Purity 2,2-Dimethyl-6-nitro-2H-benzo[b][1,4]oxazine-3(4H)-thione" [P]. US Patent, US 9852288 B2, 2018-12-14.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2013, 1032, (11), 8356-8366.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2013, 347, (3), 9269-9272.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 2,2-Dimethyl-6-nitro-2H-benzo[b][1,4]oxazine-3(4H)-thione Using HRMS and NMR". Environ. Sci. Technol., 2013, 1772, 511-518.