Anderson J P, Fischer A B, Mueller T. "一种的合成方法" [P]. US Patent, US 10672967 B2, 2015-08-05.
Klinger H, Davis P L, Patel M V. "Method for the Synthesis of Ethyl 7-methyl-5,6,7,8-tetrahydroimidazo[1,2-a]pyrazine-2-carboxylate" [P]. US Patent, US 11881821 B2, 2025-03-17.
发明人冯建国,张德明,钱学锋. "A Process for Preparing High-Purity Ethyl 7-methyl-5,6,7,8-tetrahydroimidazo[1,2-a]pyrazine-2-carboxylate" [P]. 中国发明专利, 专利号 CN 117572040 B, 授权公告日 2017-03-01.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2023, 1638, (4), 4020-4035.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2025, 2005, 7768-7773.