Stevens L M, Park J H, Hughes D C. "Method for the Synthesis of 8-((2-Hydroxyethyl)thio)-7-methoxypyrido[4,3-d]pyrimidine-2,4(1H,3H)-dione" [P]. US Patent, US 11274581 B2, 2016-07-02.
发明人郭海燕,孙丽萍,沈红梅. "A Process for Preparing High-Purity 8-((2-Hydroxyethyl)thio)-7-methoxypyrido[4,3-d]pyrimidine-2,4(1H,3H)-dione" [P]. 中国发明专利, 专利号 CN 110714660 B, 授权公告日 2025-06-18.
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