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CHEBI:17716 - lactose

ChEBI IDCHEBI:17716
ChEBI Namelactose
Stars
DefinitionA glycosylglucose disaccharide, found most notably in milk, that consists of D-galactose and D-glucose fragments bonded through a β-1→4 glycosidic linkage. The glucose fragment can be in either the α- or β-pyranose form, whereas the galactose fragment can only have the β-pyranose form.
Secondary ChEBI IDsCHEBI:10296, CHEBI:10380, CHEBI:14497, CHEBI:22460, CHEBI:22760, CHEBI:25005, CHEBI:27755, CHEBI:27968, CHEBI:28577, CHEBI:613009
Last Modified9 April 2021
DownloadsMolfile

FormulaC12H22O11
Net Charge0
Average Mass342.297
Monoisotopic Mass342.11621
SMILESOC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O
WURCSWURCS=2.0/2,2,1/[a2122h-1x_1-5][a2112h-1b_1-5]/1-2/a4-b1
InChIInChI=1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5+,6+,7-,8-,9-,10-,11?,12+/m1/s1
InChIKeyGUBGYTABKSRVRQ-QKKXKWKRSA-N

Species of MetaboliteComponentSourceComments
Homo sapiens (ncbitaxon:9606) - DOI (10.1038/nbt.2488)
Roles Classification

ChEBI Ontology
IUPAC Name 
β-D-galactopyranosyl-(1→4)-D-glucopyranose
Synonyms  Source
beta-D-Gal-(1->4)-D-GlcKEGG COMPOUND
LacJCBN
β-D-Galp-(1→4)-D-GlcpIUPAC
4-O-β-D-galactopyranosyl-D-glucoseIUPAC
milk sugarNIST Chemistry WebBook
Milchzucker  deChEBI
UniProt Name  Source
lactoseUniProt
Manual XrefsDatabases
G10504KEGG GLYCAN
C00243KEGG COMPOUND
D00046KEGG DRUG
C00001136KNApSAcK
G74621DYGlyTouCan
G74621DYGlyGen
Registry NumbersSources
Gmelin:882872Gmelin
Reaxys:1292745Reaxys
CAS:63-42-3NIST Chemistry WebBook
CAS:63-42-3ChemIDplus
CAS:63-42-3KEGG COMPOUND
Citations