CHEBI:17716 - lactose

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ChEBI Name lactose
ChEBI ID CHEBI:17716
Definition A 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.
Stars This entity has been manually annotated by the ChEBI Team.
Secondary ChEBI IDs CHEBI:27755, CHEBI:22760, CHEBI:14497, CHEBI:10296, CHEBI:22460, CHEBI:25005, CHEBI:613009, CHEBI:10380, CHEBI:27968, CHEBI:28577
Supplier Information
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Formula C12H22O11
Net Charge 0
Average Mass 342.29648
Monoisotopic Mass 342.116
InChI InChI=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
InChIKey GUBGYTABKSRVRQ-QKKXKWKRSA-N
SMILES OC[C@H]1O[C@@H](O[C@@H]2[C@@H](CO)OC(O)[C@H](O)[C@H]2O)[C@H](O)[C@@H](O)[C@H]1O
Metabolite of Species Details
Homo sapiens (NCBI:9606) See: DOI
Roles Classification
Biological Role(s): human metabolite
Any mammalian metabolite produced during a metabolic reaction in humans (Homo sapiens).
View more via ChEBI Ontology
ChEBI Ontology
Outgoing lactose (CHEBI:17716) has role human metabolite (CHEBI:77746)
lactose (CHEBI:17716) is a glycosylglucose (CHEBI:24405)
Incoming 3-(hexadecylsulfonyl)-2-[(hexadecylsulfonyl)methyl]propyl β-D-galactosyl-(1→4)-β-D-glucoside (CHEBI:63531) has functional parent lactose (CHEBI:17716)
lactobionic acid (CHEBI:55481) has functional parent lactose (CHEBI:17716)
lactose 6'-phosphate (CHEBI:28339) has functional parent lactose (CHEBI:17716)
lactose phosphate (CHEBI:25004) has functional parent lactose (CHEBI:17716)
α-lactose (CHEBI:36219) is a lactose (CHEBI:17716)
β-lactose (CHEBI:36218) is a lactose (CHEBI:17716)
IUPAC Name
β-D-galactopyranosyl-(1→4)-D-glucopyranose
Synonyms Sources
(+)-lactose NIST Chemistry WebBook
(Gal)1 (Glc)1 KEGG GLYCAN
1-beta-D-Galactopyranosyl-4-D-glucopyranose KEGG COMPOUND
4-(β-D-galactosido)-D-glucose NIST Chemistry WebBook
4-O-β-D-galactopyranosyl-D-glucose IUPAC
beta-D-Gal-(1->4)-D-Glc KEGG COMPOUND
beta-D-Gal-(1->4)-D-Glc KEGG COMPOUND
β-D-Galp-(1→4)-D-Glcp IUPAC
β-Gal1,4-Glc ChEBI
D-lactose ChemIDplus
Galβ1-4-Glc ChEBI
Lac JCBN
lactobiose NIST Chemistry WebBook
lactose UniProt
Laktobiose ChEBI
Laktose ChEBI
Milchzucker ChEBI
Milk sugar KEGG COMPOUND
milk sugar NIST Chemistry WebBook
Database Links Databases
C00001136 KNApSAcK
C00243 KEGG COMPOUND
D00046 KEGG DRUG
G10504 KEGG GLYCAN
View more database links
Registry Numbers Types Sources
1292745 Beilstein Registry Number Beilstein
1292745 Reaxys Registry Number Reaxys
63-42-3 CAS Registry Number ChemIDplus
63-42-3 CAS Registry Number NIST Chemistry WebBook
882872 Gmelin Registry Number Gmelin
Citations Waiting for Citations Types Sources
1292745 PubMed citation Europe PMC
17329833 PubMed citation Europe PMC
18300214 PubMed citation Europe PMC
19053747 PubMed citation ChEMBL
19846069 PubMed citation Europe PMC
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21403918 PubMed citation Europe PMC
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2456994 PubMed citation Europe PMC
6194884 PubMed citation Europe PMC
7574700 PubMed citation Europe PMC
Last Modified
08 February 2016