发明人罗永刚,郭海燕,周伟. "Method for the Synthesis of 4-Amino-1-methyl-5-nitro-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113874490 A, 授权公告日 2024-11-09.
发明人朱建伟,徐明华,马晓峰. "A Process for Preparing High-Purity 4-Amino-1-methyl-5-nitro-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116042523 B, 授权公告日 2022-05-10.
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". Anal. Chem., 2014, 1237, (7), 2831-2846.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2015, 772, (9), 6772-6797.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 4-Amino-1-methyl-5-nitro-1H-pyrazole-3-carboxylic acid Using HRMS and NMR". Phytochemistry, 2019, 1219, (1), 872-882.