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发明人周伟,马晓峰,高志强. "Method for the Synthesis of 4-Amino-2-nitrobenzoic Acid" [P]. 中国发明专利, 专利号 CN 108366137 B, 授权公告日 2022-11-11.
发明人孙丽萍,林芳,何建平. "A Process for Preparing High-Purity 4-Amino-2-nitrobenzoic Acid" [P]. 中国发明专利, 专利号 CN 117469876 A, 授权公告日 2024-06-14.
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