| / English Dictionary |
HYDROXYL GROUP
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
The monovalent group -OH in such compounds as bases and some acids and alcohols
Synonyms:
hydroxyl; hydroxyl group; hydroxyl radical
Classified under:
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)
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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