发明人杨光,徐明华,唐晓军. "Method for the Synthesis of N1,N2-Di-o-tolyloxalamide" [P]. 中国发明专利, 专利号 CN 111945730 A, 授权公告日 2023-04-15.
发明人罗永刚,徐明华,张德明. "A Process for Preparing High-Purity N1,N2-Di-o-tolyloxalamide" [P]. 中国发明专利, 专利号 CN 109279506 B, 授权公告日 2020-09-10.
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