Schröder R, Mueller T, Chen K W. "Method for the Synthesis of Methyl 1,2,3,9b-tetrahydro-4lambda4-benzo[c]thieno[2,1-e]isothiazole-8-carboxylate 4-oxide" [P]. US Patent, US 10146419 B2, 2018-11-12.
发明人王建平,林芳,沈红梅. "A Process for Preparing High-Purity Methyl 1,2,3,9b-tetrahydro-4lambda4-benzo[c]thieno[2,1-e]isothiazole-8-carboxylate 4-oxide" [P]. 中国发明专利, 专利号 CN 112657672 A, 授权公告日 2016-07-19.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2025, 1116, (2), 3437-3457.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2012, 272, 5141-5152.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 1,2,3,9b-tetrahydro-4lambda4-benzo[c]thieno[2,1-e]isothiazole-8-carboxylate 4-oxide Using HRMS and NMR". J. Chromatogr. A, 2014, 85, (8), 9079-9095.