Chen K W, Klinger H, Davis P L. "Method for the Synthesis of 4-(2-Difluoromethoxyphenyl)thiosemicarbazide" [P]. US Patent, US 9041218 B2, 2022-06-19.
Stevens L M, Williams B T, Yamamoto T. "A Process for Preparing High-Purity 4-(2-Difluoromethoxyphenyl)thiosemicarbazide" [P]. US Patent, US 10314714 B2, 2015-01-28.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2011, 625, (1), 6090-6109.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2012, 106, (12), 6247-6259.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 4-(2-Difluoromethoxyphenyl)thiosemicarbazide Using HRMS and NMR". Environ. Sci. Technol., 2024, 1064, (8), 6701-6705.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Food Chem., 2011, 2250, (2), 2015-2039.