发明人张德明,孙丽萍,冯建国. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 113684305 A, 授权公告日 2024-01-17.
发明人王建平,何建平,张德明. "Method for the Synthesis of (E)-Methyl[3-(4-nitrophenyl)-3-oxopropylidene]oxidoazanium" [P]. 中国发明专利, 专利号 CN 110297076 B, 授权公告日 2021-11-20.
发明人何建平,郑宇鹏,张德明. "A Process for Preparing High-Purity (E)-Methyl[3-(4-nitrophenyl)-3-oxopropylidene]oxidoazanium" [P]. 中国发明专利, 专利号 CN 117129169 B, 授权公告日 2020-02-14.
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