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发明人李文辉,孙丽萍,周伟. "Method for the Synthesis of 4-Benzylpiperazine-1-carboxamidine hemisulfate, 98%" [P]. 中国发明专利, 专利号 CN 111645625 B, 授权公告日 2021-03-09.
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参考文献 Literature
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