发明人孙丽萍,韩伟,钱学锋. "Method for the Synthesis of 2-Chloro-7-methyl-9-phenyl-7,9-dihydro-8H-purin-8-one" [P]. 中国发明专利, 专利号 CN 109842537 A, 授权公告日 2025-04-14.
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