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发明人郭海燕,沈红梅,孙丽萍. "Method for the Synthesis of Ethyl 4-carbamoyl-1,2-dimethyl-5-oxo-4,5-dihydro-1H-pyrrole-3-carboxylate" [P]. 中国发明专利, 专利号 CN 108959961 B, 授权公告日 2023-02-03.
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