A pyrimidine nucleoside that has cytosine attached to the pentose sugar ribose.
Cytidine is a component of RNA and demonstrated "antidepressant-like effects in rats.
IUPAC name: 4-amino-1-[(2R,3R,4S,5R)-3, 4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrimidin-2-one
Molecular formula: C9H13N3O5
Synonyms: Cytosine riboside, Cytosine beta-D-riboside.
See also: nucleoside.