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发明人马晓峰,陈志强,钱学锋. "Method for the Synthesis of Methyl 3-amino-5-methyl-4-oxo-2-thioxo-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidine-6-carboxylate" [P]. 中国发明专利, 专利号 CN 110674013 A, 授权公告日 2020-11-22.
发明人赵玉洁,郭海燕,张德明. "A Process for Preparing High-Purity Methyl 3-amino-5-methyl-4-oxo-2-thioxo-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidine-6-carboxylate" [P]. 中国发明专利, 专利号 CN 113356920 A, 授权公告日 2023-02-16.
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