发明人韩伟,高志强,罗永刚. "Method for the Synthesis of 2'-Carboxy-4-dimethylamino-2-hydroxy-5'-nitrobenzophenone" [P]. 中国发明专利, 专利号 CN 114188114 A, 授权公告日 2023-04-17.
发明人高志强,朱建伟,张德明. "A Process for Preparing High-Purity 2'-Carboxy-4-dimethylamino-2-hydroxy-5'-nitrobenzophenone" [P]. 中国发明专利, 专利号 CN 112584424 B, 授权公告日 2018-02-23.
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