发明人赵玉洁,杨光,孙丽萍. "Method for the Synthesis of 7-Ethyl-3-methyl-6,7-dihydro-5H-spiro[imidazo[1,2-a]pyrazine-8,4'-piperidine]" [P]. 中国发明专利, 专利号 CN 108193525 A, 授权公告日 2021-03-20.
Lefèvre J P, Rossi M, Jørgensen K. "A Process for Preparing High-Purity 7-Ethyl-3-methyl-6,7-dihydro-5H-spiro[imidazo[1,2-a]pyrazine-8,4'-piperidine]" [P]. European Patent, EP 3597773 A1, 2025-01-27.
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