Roberts E F, Johnson M A, Fischer A B. "一种非奈利酮杂质89的合成方法" [P]. US Patent, US 11356006 B2, 2015-11-17.
发明人郭海燕,沈红梅,周伟. "Method for the Synthesis of Finerenone Impurity 89" [P]. 中国发明专利, 专利号 CN 116334531 B, 授权公告日 2016-07-19.
发明人何建平,张德明,高志强. "A Process for Preparing High-Purity Finerenone Impurity 89" [P]. 中国发明专利, 专利号 CN 117474830 B, 授权公告日 2022-09-27.
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