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发明人赵玉洁,朱建伟,钱学锋. "Method for the Synthesis of Ethyl 5-methyl-4-oxo-2-(trichloromethyl)-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate" [P]. 中国发明专利, 专利号 CN 113135870 A, 授权公告日 2019-08-11.
发明人冯建国,郭海燕,朱建伟. "A Process for Preparing High-Purity Ethyl 5-methyl-4-oxo-2-(trichloromethyl)-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate" [P]. 中国发明专利, 专利号 CN 109987606 B, 授权公告日 2020-08-04.
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