发明人黄志刚,罗永刚,徐明华. "一种苏丹红4号的合成方法" [P]. 中国发明专利, 专利号 CN 115038384 A, 授权公告日 2025-12-27.
发明人李文辉,孙丽萍,周伟. "Method for the Synthesis of Sudan 4" [P]. 中国发明专利, 专利号 CN 117520252 B, 授权公告日 2025-01-20.
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