发明人黄志刚,杨光,周伟. "Method for the Synthesis of Ethyl 2-(methylthio)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 112635281 A, 授权公告日 2019-12-18.
发明人唐晓军,沈红梅,何建平. "A Process for Preparing High-Purity Ethyl 2-(methylthio)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 116386498 A, 授权公告日 2025-03-02.
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