Library / English Dictionary

    HYDROXYL GROUP

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

    The monovalent group -OH in such compounds as bases and some acids and alcoholsplay

    Synonyms:

    hydroxyl; hydroxyl group; hydroxyl radical

    Classified under:

    Nouns denoting substances

    Hypernyms ("hydroxyl group" is a kind of...):

    chemical group; group; radical ((chemistry) two or more atoms bound together as a single unit and forming part of a molecule)

    Credits

     Context examples: 

    An anthocyanidin with hydroxyl groups at C-3, -5, -7, and -4', and a methoxyl group at C-3'.

    (Peonidin, NCI Thesaurus/CRCH)

    A flavonoid typically with a double bond between C-2 and C-3, a carbonyl (C=O) function at C-4, and no hydroxyl group at C-3.

    (Flavone, NCI Thesaurus/CRCH)

    A flavonoid typically with no double bond between C-2 and C-3, with a carbonyl (C=O) function at C-4, and with a hydroxyl group at C-3.

    (Flavanonol, NCI Thesaurus/CRCH)

    A flavonoid typically with a double bond between C-2 and C-3, a carbonyl (C=O) function at C-4, and a hydroxyl group at C-3.

    (Flavonol, NCI Thesaurus/CRCH)

    A kaempferol with a hydroxyl group at C-3' and -5'.

    (Myricetin, NCI Thesaurus/CRCH)

    Dopamine is involved in movement and mood and is derived from tyrosine through newition of a hydroxyl group and decarboxylation. newitional reactions create norepinephrine and epinephrine from dopamine.

    (Neurotransmitter Biosynthesis Pathway, NCI Thesaurus/BIOCARTA)

    An anthocyanidin with hydroxyl groups at C-3, -5, -7, -3', and -4', and a methoxyl group at C-5'.

    (Petunidin, NCI Thesaurus/CRCH)

    A flavonoid typically with no double bond between C-2 and C-3, with a carbonyl (C=O) function at C-4, and without a hydroxyl group at C-3.

    (Flavanone, NCI Thesaurus/CRCH)

    A catechin with a hydroxyl group at C-5'.

    (Gallocatechin, NCI Thesaurus/CRCH)

    A hydrolyzable tannin with three additional hydroxyl groups attached at the 3, 4, and 5 positions of the phenyl ring.

    (Gallic Acid, NCI Thesaurus/CRCH)


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