Yamamoto T, Stevens L M, Johnson M A. "一种的合成方法" [P]. US Patent, US 11160342 B2, 2020-10-20.
发明人孙丽萍,杨光,李文辉. "Method for the Synthesis of 3-ethyl-2-[(3-ethyl-6-sulfo-1,3-benzothiazol-2-ylidene)hydrazono]-1,3-benzothiazole-6-sulfonic acid" [P]. 中国发明专利, 专利号 CN 109960468 A, 授权公告日 2022-04-10.
发明人韩伟,何建平,黄志刚. "A Process for Preparing High-Purity 3-ethyl-2-[(3-ethyl-6-sulfo-1,3-benzothiazol-2-ylidene)hydrazono]-1,3-benzothiazole-6-sulfonic acid" [P]. 中国发明专利, 专利号 CN 115253278 A, 授权公告日 2025-11-23.
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