Optochin (or ethylhydrocupreine hydrochloride) is a derivative of quinine introduced in 1911 by Morgenroth and Levy with the intention to treat pneumococci infection. [1] In very high dilutions, it …

Streptococcus pneumoniae strains are sensitive to the chemical optochin (ethylhydrocupreine hydrochloride). Optochin sensitivity allows for the presumptive identification of alpha-hemolytic …

Aug 10, 2022 · Optochin is a chemical, ethylhydrocupreine hydrochloride and is completely soluble in water. It is useful in the identification of Streptococcus pneumoniae, the alpha-hemolytic …

Mar 31, 2023 · Optochin, also called ethylhydrocupreine hydrochloride, is a derivative of quinine, an antimalarial agent. It was introduced by Morgenroth and Levy in 1911 as an antibiotic for treating …

Pneumococci are distinguished from other alpha hemolytic streptococci by two key reactions: optochin susceptibility and solubility in deoxycholate (bile). Pneumococci, but not most other streptococci, are …

Hardy Diagnostics Optochin Differentiation Disks are recommended for use in the presumptive identification of Streptococcus pneumoniae from other alpha-hemolytic streptococci. Streptococcus …

Apr 29, 2025 · Optochin, a quinine derivative, targets the proton-translocating F₀F₁ ATPase, an enzyme complex essential for ATP synthesis in Streptococcus pneumoniae. By disrupting this enzyme’s …

Nov 18, 2025 · Optochin, also known by its chemical name ethylhydrocupreine hydrochloride, is a specific type of antibiotic belonging to the cinchona alkaloid class. Its origins trace back to quinine, a …

Optochin is a cinchona alkaloid consisting of 10,11-dihydrocinchonan bearing hydroxy and ethoxy substituents at positions 9 and 6' respectively. It has a role as an EC 3.6.3.10 (H (+)/K (+) …

Optochin is a chemical compound that is capable of causing lysis (breakdown) of Streptococcus pneumoniae, a type of bacteria. This compound is specifically effective against S. pneumoniae, as …