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发明人张德明,徐明华,沈红梅. "A Process for Preparing High-Purity 4-Amino-N-methyl-1H-imidazole-5-carbimidothioic acid" [P]. 中国发明专利, 专利号 CN 110197863 B, 授权公告日 2016-12-06.
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