发明人王建平,朱建伟,冯建国. "Method for the Synthesis of Gadobutrol Impurity 12 4HCl" [P]. 中国发明专利, 专利号 CN 109625102 A, 授权公告日 2024-03-11.
发明人唐晓军,钱学锋,郭海燕. "A Process for Preparing High-Purity Gadobutrol Impurity 12 4HCl" [P]. 中国发明专利, 专利号 CN 114813678 A, 授权公告日 2017-10-11.
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