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发明人郭海燕,沈红梅,孙丽萍. "Method for the Synthesis of Ethyl 4,4,4-trifluoro-3-oxo-2-(ureidomethylene)butanoate" [P]. 中国发明专利, 专利号 CN 114074884 B, 授权公告日 2024-09-09.
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