发明人周伟,赵玉洁,张德明. "一种吡格列酮杂质54的合成方法" [P]. 中国发明专利, 专利号 CN 110667586 A, 授权公告日 2018-05-25.
发明人唐晓军,王建平,杨光. "Method for the Synthesis of Pioglitazone impurity 54" [P]. 中国发明专利, 专利号 CN 116962031 A, 授权公告日 2021-11-01.
发明人冯建国,孙丽萍,周伟. "A Process for Preparing High-Purity Pioglitazone impurity 54" [P]. 中国发明专利, 专利号 CN 109828563 A, 授权公告日 2025-03-24.
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