发明人李文辉,韩伟,赵玉洁. "Method for the Synthesis of 1H-Benzo[d]imidazole-5-sulfonic acid" [P]. 中国发明专利, 专利号 CN 115727592 A, 授权公告日 2025-10-13.
发明人高志强,罗永刚,张德明. "A Process for Preparing High-Purity 1H-Benzo[d]imidazole-5-sulfonic acid" [P]. 中国发明专利, 专利号 CN 117747369 A, 授权公告日 2024-01-15.
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