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发明人王建平,钱学锋,罗永刚. "A Process for Preparing High-Purity 3-Amino-4-(ethylmethylamino)-3-cyclobutene-1,2-dione" [P]. 中国发明专利, 专利号 CN 112705589 A, 授权公告日 2020-02-26.
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