Hughes D C, Yamamoto T, Chen K W. "一种的合成方法" [P]. US Patent, US 9887531 B2, 2018-01-22.
发明人刘建华,杨光,徐明华. "Method for the Synthesis of 1-(2,2-Difluoroethyl)-4-(((5-fluorothiophen-2-yl)methyl)amino)-1H-pyrazole-5-carboxylic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 109293933 B, 授权公告日 2017-06-19.
发明人罗永刚,王建平,胡光. "A Process for Preparing High-Purity 1-(2,2-Difluoroethyl)-4-(((5-fluorothiophen-2-yl)methyl)amino)-1H-pyrazole-5-carboxylic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 115655582 A, 授权公告日 2022-04-06.
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