发明人杨光,赵玉洁,胡光. "Method for the Synthesis of 3-Ethyl-2-thioxo-4-imidazolidinone" [P]. 中国发明专利, 专利号 CN 109034168 B, 授权公告日 2020-06-11.
发明人黄志刚,周伟,韩伟. "A Process for Preparing High-Purity 3-Ethyl-2-thioxo-4-imidazolidinone" [P]. 中国发明专利, 专利号 CN 109261669 A, 授权公告日 2017-10-16.
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