发明人周伟,陈志强,杨光. "Method for the Synthesis of 4-(Difluoromethoxy)-5-methoxy-2-nitrobenzoic acid" [P]. 中国发明专利, 专利号 CN 114660970 B, 授权公告日 2018-09-05.
发明人唐晓军,孙丽萍,胡光. "A Process for Preparing High-Purity 4-(Difluoromethoxy)-5-methoxy-2-nitrobenzoic acid" [P]. 中国发明专利, 专利号 CN 108548520 A, 授权公告日 2021-12-24.
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