Wikipedia:  

N-Acetylneuraminic acid

N-Acetylneuraminate; 5-Acetamido-3,5-dideoxy-D-glycero-D-galacto-2-nonulosonic acid; Neu5Ac; N-Acetylneuraminic acid
Molecular Formula
C11 H19 N O9
Natural Isotopic Abundance Mass
309.2698600000
Mono-Isotopic Molecular Masses
C12N14:   309.105981214
C13N14:   320.14288443
C12N15:   310.103016107
C13N15:   321.139919323
N-Acetylneuraminic acid image
N-Acetylneuraminic acid
InCHi String:
InChI=1S/C11H19NO9/c1-4(14)12-7-5(15)2-11(20,10(18)19)21-9(7)8(17)6(16)3-13/h5-9,13,15-17,20H,2-3H2,1H3,(H,12,14)(H,18,19)/t5-,6+,7+,8+,9+,11?/m0/s1

isomeric SMILES:
CC(=O)N[C@@H]1[C@H](CC(O[C@H]1[C@@H]([C@@H](CO)O)O)(C(=O)O)O)O
canonical SMILES:
CC(=O)NC1C(CC(OC1C(C(CO)O)O)(C(=O)O)O)O


IUPAC: IUPAC systematic
(4S,5R,6R)-5-acetamido-2,4-dihydroxy-6-[(1S,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid

IUPAC traditional: IUPAC cas: IUPAC openeye
(4S,5R,6R)-5-acetamido-2,4-dihydroxy-6-[(1S,2R)-1,2,3-trihydroxypropyl]tetrahydropyran-2-carboxylic acid



PubChem Substance (SID):   85164905   3568
PubChem Compound (CID):   439197
KEGG: Compound ID   C00270
CAS Registry IDs:   131-48-6
PDB Chemical Component   NAN   SI2   SIA   SLB
Miscellaneous Databases and IDs:   CHEBI 17012

Reference data were obtained primarily from the PubChem database.

Three dimensional molecular rendering uses Jmol.