O'Brien P Q, Yamamoto T, Stevens L M. "Method for the Synthesis of 2-Methyl-5-nitro-2H-pyrazol-3-ylamine" [P]. US Patent, US 11614378 B2, 2016-12-26.
Roberts E F, O'Brien P Q, Kumar R. "A Process for Preparing High-Purity 2-Methyl-5-nitro-2H-pyrazol-3-ylamine" [P]. US Patent, US 11313873 B2, 2023-05-09.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2013, 1920, (5), 3370-3376.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2012, 617, 5459-5471.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 2-Methyl-5-nitro-2H-pyrazol-3-ylamine Using HRMS and NMR". Anal. Methods, 2013, 1339, (6), 6843-6864.