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  2. Quinone - Wikipedia

    en.wikipedia.org/wiki/Quinone

    Other important examples are 1,2-benzoquinone (ortho-quinone), 1,4-naphthoquinone and 9,10-anthraquinone. The name is derived from that of quinic acid (with the suffix "-one" indicating a ketone), since it is one of the compounds obtained upon oxidation of quinic acid. [ 4 ]

  3. Quinine - Wikipedia

    en.wikipedia.org/wiki/Quinine

    Quinine is an alkaloid, a naturally occurring chemical compound. [5] How it works as a medicine is not entirely clear. [5] Quinine was first isolated in 1820 from the bark of a cinchona tree, which is native to Peru, [5] [9] [10] and its molecular formula was determined by Adolph Strecker in 1854. [11]

  4. Quinoline - Wikipedia

    en.wikipedia.org/wiki/Quinoline

    Pyrroloquinoline quinone (PQQ), a redox cofactor and controversial nutritional supplement; Quinazoline, an aza derivative of quinoline; Quinine; Similar simple aromatic rings. Isoquinoline, an analog with the nitrogen atom in position 2; Pyridine, an analog without the fused benzene ring; Naphthalene, an analog with a carbon instead of the nitrogen

  5. Tonic water - Wikipedia

    en.wikipedia.org/wiki/Tonic_water

    The quinine in tonic water will fluoresce under ultraviolet light. In fact, quinine will visibly fluoresce in direct sunlight against a dark background. [19] The quinine molecules release energy as light instead of heat, which is more common. The state is not stable, and the molecules will eventually return to a ground state and no longer glow ...

  6. Quinine total synthesis - Wikipedia

    en.wikipedia.org/wiki/Quinine_total_synthesis

    The aromatic component of the quinine molecule is a quinoline with a methoxy substituent. The amine component has a quinuclidine skeleton and the methylene bridge in between the two components has a hydroxyl group. The substituent at the 3 position is a vinyl group.

  7. Quinoline alkaloids - Wikipedia

    en.wikipedia.org/wiki/Quinoline_alkaloids

    Among the quinoline alkaloids are the cinchona alkaloids quinine and quinidine, which are important due to their therapeutic potential, furthermore cinchonine and cinchonidine, as well as some furoquinoline alkaloids and acridine alkaloids.

  8. Pyrroloquinoline quinone - Wikipedia

    en.wikipedia.org/wiki/Pyrroloquinoline_quinone

    Pyrroloquinoline quinone (PQQ), also called methoxatin, is a redox cofactor and antioxidant. [1] Quinoprotein glucose dehydrogenase is used as a glucose sensor in ...

  9. Catechol oxidase - Wikipedia

    en.wikipedia.org/wiki/Catechol_oxidase

    The key difference between the two related enzymes is that tyrosinase can catalyze the hydroxylation of monophenols to diphenols (monophenolase activity) as well as the oxidation of the o-diphenol to the o-quinone (diphenolase activity) whereas catechol oxidase only possesses diphenolase activity. [5]