Wikipedia:  

Cytidine

Cytidine; 1-beta-D-Ribofuranosylcytosine; 1beta-Ribofuranosylcytosine; 2(1H)-Pyrimidinone, 4-amino-1beta-D-ribofuranosyl-; 1beta-2'-Ribofuranosylcytosine, d-; Cytosine, 1-beta-D-ribofuranosyl-; beta-D-Ribofuranoside, cytosine-1; 4-Amino-1beta-D-ribofuranosyl-2(1H)-pyrimidinone; Cyd; 1-beta-Ribofuranosylcytosine; CYTIDINE
Molecular Formula
C9 H13 N3 O5
Natural Isotopic Abundance Mass
243.2166200000
Mono-Isotopic Molecular Masses
C12N14:   243.085520543
C13N14:   252.115714084
C12N15:   246.076625223
C13N15:   255.1068187632
Cytidine image
Cytidine
InCHi String:
InChI=1S/C9H13N3O5/c10-5-1-2-12(9(16)11-5)8-7(15)6(14)4(3-13)17-8/h1-2,4,6-8,13-15H,3H2,(H2,10,11,16)/t4-,6-,7-,8-/m1/s1

isomeric SMILES:
C1=CN(C(=O)N=C1N)[C@H]2[C@@H]([C@@H]([C@H](O2)CO)O)O
canonical SMILES:
C1=CN(C(=O)N=C1N)C2C(C(C(O2)CO)O)O


IUPAC: IUPAC systematic
4-amino-1-[(2R,3R,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrimidin-2-one

IUPAC traditional
4-amino-1-[(2R,3R,4R,5R)-3,4-dihydroxy-5-methylol-tetrahydrofuran-2-yl]pyrimidin-2-one

IUPAC cas: IUPAC openeye
4-amino-1-[(2R,3R,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl]pyrimidin-2-one



PubChem Substance (SID):   85165010   149078   3758
PubChem Compound (CID):   6175
KEGG: Compound ID   C00475
CAS Registry IDs:   4395-95-3   65-46-3
PDB Chemical Component   n/a
Miscellaneous Databases and IDs:   CHEBI 17562   NSC 20258   EINECS 200-610-9

Reference data were obtained primarily from the PubChem database.

Three dimensional molecular rendering uses Jmol.