Ethylhydrocupreine hydrochloride (Optochin hydrochloride) 是一种奎宁衍生物抗菌剂，对肺炎链球菌具有抗菌活性，并对恶性疟原虫展现出抗疟作用。该化合物同时可作为家鸡苦味受体（ggTas2r1/ggTas2r2/ggTas2r7）的激动剂。

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2~8℃避光保存，有效期3年。

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[2] Kolmer JA, Sands JR. CHEMOTHERAPEUTIC STUDIES WITH ETHYLHYDROCUPREINE HYDROCHLORIDE IN EXPERIMENTAL PNEUMOCOCCUS PLEURITIS. J Exp Med. 1921 May 31;33(6):693-711. doi: 10.1084/jem.33.6.693. PMID: 19868530; PMCID: PMC2128296.