发明人赵玉洁,张德明,冯建国. "Method for the Synthesis of Phenformin Hydrochloride" [P]. 中国发明专利, 专利号 CN 108362753 A, 授权公告日 2016-11-14.
发明人黄志刚,徐明华,马晓峰. "A Process for Preparing High-Purity Phenformin Hydrochloride" [P]. 中国发明专利, 专利号 CN 109048872 A, 授权公告日 2016-01-11.
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