W9T as a free ligand exists in 4 entries. Examples include: 6NWM 6B94 6B8K

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View summary at Ligand Expo

Chemical Component Summary

FormulaC12 H22 O11
Molecular Weight342.30
Isomeric SMILESOC[C@H]1O[C@](O)(CO)[C@@H](O)[C@@H]1O[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O

Chemical Details

Formal Charge0
Atom Count45
Chiral Atom Count9
Chiral AtomsC11, C12, C13, C14, C15, C2, C3, C4, C5
Bond Count46
Aromatic Bond Count0
Leaving Atomsn/a

Drug Info: DrugBank

DrugBank IDDB00581 Different stereochemistry
DescriptionA synthetic disaccharide used in the treatment of constipation and hepatic encephalopathy. It has also been used in the diagnosis of gastrointestinal disorders. (From Martindale, The Extra Pharmacopoeia, 30th ed, p887)
  • 4-O-beta-D-Galactopyranosyl-D-fructofuranose
  • 4-O-beta-D-Galactopyranosyl-D-fructose
  • Lactulosa
  • Lactulose
  • Lactulosum
Brand Names
  • Apo-lactulose
  • Cephulac Syr 667mg/ml
  • Chronulac Syr
  • Chronulac Syr 667mg/ml
  • Comalose R Sirop 10gm/15ml
Affected OrganismHumans and other mammals
IndicationFor the treatment of constipation and hepatic encephalopathy.
PharmacologyTherapeutically, lactulose has laxative and ammonia-detoxifying actions. In treating constipation lactulose metabolites draw water into the bowel, causing a cathartic effect through osmotic action.
Mechanism of actionLactulose is a synthetic sugar used in the treatment of constipation and liver disease. It consists of the monosaccharides fructose and galactose. In the colon, lactulose is broken down primarily to lactic acid, and also to small amounts of formic and acetic acids, by the action of via evolved-beta galactosidase from colonic bacteria, which results in an increase in osmotic pressure and slight acidification of the colonic contents. This in turn causes an increase in stool water content and softens the stool. In treating heptic diseases (hepatic encephalopathy) it is thought that lactulose draws out ammonia from the body in the same way that it draws out water into the colon.
Route of administration
  • Oral
  • Oral; Other
  • Oral; Rectal
  • Alimentary Tract and Metabolism
  • Carbohydrates
  • Chemical Actions and Uses
  • Disaccharides
  • Drugs for Constipation
  • A06AD61
  • A06AD11
CAS number4618-18-2

Drug Targets

NameSequence SearchPharmacological ActionActions
Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS. Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID:21059682