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Not to be confused with Icariin.
Icaridin 3d structure.png
IUPAC name
1-piperidinecarboxylic acid 2-(2-hydroxyethyl)-1-­methylpropylester
119515-38-7 YesY
ChemSpider 111359 YesY
Jmol interactive 3D Image
PubChem 125098
UNII N51GQX0837 YesY
Molar mass 229.3 g/mol
Boiling point 296 °C (565 °F; 569 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Icaridin, also known as picaridin, KBR 3023, under the INCI name hydroxyethyl isobutyl piperidine carboxylate, and the trade names Bayrepel and Saltidin, is an insect repellent. It has broad efficacy against various insects and is almost colorless and odorless.

The name picaridin was proposed as an International Nonproprietary Name (INN) to the World Health Organization (WHO), but the official name that has been approved by the WHO is icaridin. The compound was developed by the German chemical company Bayer and was given the name Bayrepel. In 2005, Lanxess AG and its subsidiary Saltigo GmbH were spun off from Bayer[1] and the product was renamed Saltidin in 2008.[2]

Empirical findings[edit]

Icaridin has been reported to be as effective as DEET without the irritation associated with DEET.[3] According to the WHO, icaridin “demonstrates excellent repellent properties comparable to, and often superior to, those of the standard DEET.” In the United States, the Centers for Disease Control and Prevention recommends using repellents based on icaridin, DEET, IR3535, or oil of lemon eucalyptus (containing p-menthane-3,8-diol, PMD) for effective protection against mosquitoes that carry the West Nile virus, Eastern Equine Encephalitis and other illnesses.[4]

Unlike DEET, icaridin does not dissolve plastics.[5]

Icaridin, first used in Europe in 2001, has been reported to be effective by Consumer Reports (7% solution)[6] and the Australian Army (20% solution).[7] Consumer Reports retests in 2006 gave as result that a 7% solution of icaridin offered little or no protection against Aedes mosquitoes (vector of dengue fever) and a protection time of about 2.5 hours against Culex (vector of West Nile virus), while a 15% solution was good for about one hour against Aedes and 4.8 hours against Culex.[8]


Stereoisomers of icaridin

Icaridin contains two stereocenters: one where the hydroxyethyl chain attaches to the ring, and one where the sec-butyl attaches to the oxygen of the carbamate. The commercial material contains a mixture of all four stereoisomers.

See also[edit]

  • SS220, another substituted-piperidine insect-repellant


  1. ^ Bayer completes spin off of Lanxess AG
  2. ^ C&EN News: Saltigo renames insect repellant
  3. ^ Journal of Drugs and Dermatology (Jan-Feb 2004)
  4. ^ "Traveler's Health: Avoid bug bites". Centers for Disease Control and Prevention. 
  5. ^ Picaridin.
  6. ^ Consumerreports.Org - Consumer Reports Confirms Effectiveness Of New Alternative To Deet
  7. ^ http://www.bioone.org/perlserv/?request=get-document&issn=0022-2585&volume=041&issue=03&page=0414
  8. ^ "Insect repellents: which keep bugs at bay?" Consumer Reports, June 2006, vol 71 (issue 6), p. 6.

External links[edit]