发明人张德明,马晓峰,冯建国. "Method for the Synthesis of 3-(3,4-Methylenedioxyphenyl)-5-nitrobenzoic acid" [P]. 中国发明专利, 专利号 CN 110975023 A, 授权公告日 2016-09-03.
Hughes D C, Patel M V, Stevens L M. "A Process for Preparing High-Purity 3-(3,4-Methylenedioxyphenyl)-5-nitrobenzoic acid" [P]. US Patent, US 10688245 B2, 2019-05-01.
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