发明人王建平,杨光,罗永刚. "Method for the Synthesis of 1H-Benzimidazolium, 2-[7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl]-1,3-dimethyl-, chloride" [P]. 中国发明专利, 专利号 CN 113973244 B, 授权公告日 2025-09-10.
发明人王建平,沈红梅,唐晓军. "A Process for Preparing High-Purity 1H-Benzimidazolium, 2-[7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl]-1,3-dimethyl-, chloride" [P]. 中国发明专利, 专利号 CN 108334026 A, 授权公告日 2022-11-08.
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