O'Brien P Q, Brown S R, Johnson M A. "一种的合成方法" [P]. US Patent, US 10210330 B2, 2021-12-03.
Schröder R, Nowak P, Kowalski A. "Method for the Synthesis of 1-(O-tolyl)urea" [P]. European Patent, EP 3923628 A1, 2020-01-04.
Kumar R, Park J H, Patel M V. "A Process for Preparing High-Purity 1-(O-tolyl)urea" [P]. US Patent, US 11527003 B2, 2018-12-08.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2018, 1457, 6473-6495.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2013, 1360, 6597-6607.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 1-(O-tolyl)urea Using HRMS and NMR". J. Sep. Sci., 2023, 2457, 3256-3260.