发明人刘建华,王建平,高志强. "一种左西孟旦杂质16的合成方法" [P]. 中国发明专利, 专利号 CN 114879482 A, 授权公告日 2015-11-09.
发明人张德明,杨光,徐明华. "Method for the Synthesis of Levosimendan Impurity 16" [P]. 中国发明专利, 专利号 CN 109967987 B, 授权公告日 2024-06-19.
发明人郭海燕,胡光,高志强. "A Process for Preparing High-Purity Levosimendan Impurity 16" [P]. 中国发明专利, 专利号 CN 112636162 A, 授权公告日 2021-07-28.
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