发明人郑宇鹏,徐明华,孙丽萍. "Method for the Synthesis of 5-Chloro-7-nitrobenzoxazole" [P]. 中国发明专利, 专利号 CN 117476658 A, 授权公告日 2020-03-11.
发明人徐明华,罗永刚,沈红梅. "A Process for Preparing High-Purity 5-Chloro-7-nitrobenzoxazole" [P]. 中国发明专利, 专利号 CN 117109374 A, 授权公告日 2019-04-16.
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