Chemical Component Summary

Identifiers 4-O-alpha-D-glucopyranosyl-alpha-D-glucopyranose
Formula C12 H22 O11
Molecular Weight 342.30 g/mol
Type D-saccharide
Isomeric SMILES OC[C@H]1O[C@H](O[C@H]2[C@H](O)[C@@H](O)[C@@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@@H]1O
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

Chemical Details

Formal Charge 0
Atom Count 45
Chiral Atom Count 10
Chiral Atoms C1 C2 C3 C4 C5 C1' C2' C3' C4' C5'
Bond Count 46
Aromatic Bond Count 0
Leaving Atoms O1'

Drug Info: DrugBank

DrugBank ID DB04465   (Different stereochemistry)
Name Lactose
Groups approved
Description A disaccharide of GLUCOSE and GALACTOSE in human and cow milk. It is used in pharmacy for tablets, in medicine as a nutrient, and in industry. [PubChem]
Brand Names
  • Lac-tol Pwr 50gm/pck
  • Lactol
Route of administration Oral
  • Carbohydrates
  • Chemical Actions and Uses
  • Diet, Food, and Nutrition
  • Disaccharides
  • Flavoring Agents
CAS number 63-42-3
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