发明人朱建伟,林芳,何建平. "Method for the Synthesis of 3-Amino-6,7-dihydro-5H-cyclopenta[b]pyrazine-2-carbonitrile" [P]. 中国发明专利, 专利号 CN 117049143 B, 授权公告日 2023-07-10.
发明人李文辉,高志强,钱学锋. "A Process for Preparing High-Purity 3-Amino-6,7-dihydro-5H-cyclopenta[b]pyrazine-2-carbonitrile" [P]. 中国发明专利, 专利号 CN 116048216 B, 授权公告日 2021-01-17.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2010, 1009, 4286-4305.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2017, 616, (1), 7614-7617.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of 3-Amino-6,7-dihydro-5H-cyclopenta[b]pyrazine-2-carbonitrile Using HRMS and NMR". Environ. Sci. Technol., 2025, 524, (8), 579-599.