Chemical Component Summary

FormulaC12 H7 Cl3 O2
Molecular Weight289.54
Isomeric SMILESOc1cc(Cl)ccc1Oc1ccc(Cl)cc1Cl

Chemical Details

Formal Charge0
Atom Count24
Chiral Atom Count0
Chiral Atomsn/a
Bond Count25
Aromatic Bond Count12
Leaving Atomsn/a

Drug Info: DrugBank

DrugBank IDDB08604 Different stereochemistry
DescriptionAn aromatic ether that is phenol which is substituted at C-5 by a chloro group and at C-2 by a 2,4-dichlorophenoxy group. It is widely used as a preservative and antimicrobial agent in personal care products such as soaps, skin creams, toothpaste and deodorants as well as in household items such as plastic chopping boards, sports equipment and shoes. [ChEBI]
  • 2,4,4'-Trichloro-2'-hydroxydiphenyl ether
  • 5-Chloro-2-(2,4-dichloro-phenoxy)-phenol
  • Triclosan
  • Triclosanum
Brand Names
  • 1% Triclosan Anti-microbial Foaming Skin Cleanser
  • 1% Triclosan Anti-microbial Skin Cleanser
  • 1014 Foa
Affected Organism
  • Fungi, yeast and protozoans
  • Bacteria
IndicationTriclosan is used in a variety of common household products, including soaps, mouthwashes, dish detergents, toothpastes, deodorants, and hand sanitizers. It is also used in health care settings in surgical scrubs and personnel hand washes.
Mechanism of actionAt in-use concentrations, triclosan acts as a biocide, with multiple cytoplasmic and membrane targets. At lower concentrations, however, triclosan appears bacteriostatic and is seen to target bacteria mainly by inhibiting fatty acid synthesis. Triclosan binds to bacterial enoyl-acyl carrier protein reductase enzyme (ENR), which is encoded by the gene FabI. This binding increases the enzyme's affinity for nicotinamide adenine dinucleotide (NAD+). This results in the formation of a stable ternary complex of ENR-NAD+-triclosan, which is unable to participate in fatty acid synthesis. Fatty acids are necessary for reproducing and building cell membranes. Humans do not have an ENR enzyme, and thus are not affected.
Route of administration
  • Cutaneous
  • Dental
  • Oral
  • Percutaneous
  • Topical
  • Anti-Infective Agents
  • Anti-Infective Agents, Local
  • Antimetabolites
  • Benzene Derivatives
  • Chemical Actions and Uses
  • D08AE04
  • D09AA06
CAS number3380-34-5
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