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发明人沈红梅,周伟,徐明华. "A Process for Preparing High-Purity (E)-4-hydroxy-6-methyl-3-((2-(3-nitrophenyl)hydrazono)methyl)-2H-pyran-2-one" [P]. 中国发明专利, 专利号 CN 110875028 A, 授权公告日 2025-08-14.
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