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| first2 =WS
| first2 =WS
| pmc =2518096
| pmc =2518096
}}</ref><ref>{{cite news |title=For mosquitoes, DEET just plain stinks |first=Maggie |last=Fox |author2=David Wiessler |url=http://www.reuters.com/article/2008/08/18/us-mosquitoes-deet-idUSN1849399820080818 |agency=Reuters |location=Washington |date= Aug 18, 2008 |accessdate=August 11, 2011 |archiveurl=http://webcitation.org/query?url=http://www.reuters.com/article/2008/08/18/us-mosquitoes-deet-idUSN1849399820080818 |archivedate=August 11, 2011 |deadurl=no }}</ref>
}}</ref><ref>{{cite news|title=For mosquitoes, DEET just plain stinks |first=Maggie |last=Fox |author2=David Wiessler |url=http://www.reuters.com/article/2008/08/18/us-mosquitoes-deet-idUSN1849399820080818 |agency=Reuters |location=Washington |date=Aug 18, 2008 |accessdate=August 11, 2011 |archiveurl=http://www.webcitation.org/60qqLxqXb?url=http://www.reuters.com/article/2008/08/18/us-mosquitoes-deet-idUSN1849399820080818 |archivedate=August 11, 2011 |deadurl=no |df= }}</ref>


A 2011 structural study (PDB: [http://www.rcsb.org/pdb/explore/explore.do?structureId=3n7h 3N7H]) revealed that DEET binds to ''[[Anopheles gambiae]]'' [[odorant binding protein]] 1 (AgamOBP1) with high shape complementarity, suggesting that AgamOBP1 is a molecular target of DEET and perhaps other repellents.<ref>{{cite journal
A 2011 structural study (PDB: [http://www.rcsb.org/pdb/explore/explore.do?structureId=3n7h 3N7H]) revealed that DEET binds to ''[[Anopheles gambiae]]'' [[odorant binding protein]] 1 (AgamOBP1) with high shape complementarity, suggesting that AgamOBP1 is a molecular target of DEET and perhaps other repellents.<ref>{{cite journal
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When used as directed, products containing between 10% and 30% DEET have been found by the [[American Academy of Pediatrics]] to be safe to use on children, as well as adults, but recommends that DEET not be used on infants less than two months old.<ref name="CDC"/>
When used as directed, products containing between 10% and 30% DEET have been found by the [[American Academy of Pediatrics]] to be safe to use on children, as well as adults, but recommends that DEET not be used on infants less than two months old.<ref name="CDC"/>


Citing human health reasons, [[Health Canada]] barred the sale of insect repellents for human use that contained more than 30% DEET in a 2002 re-evaluation. The agency recommended that DEET-based products be used on children between the ages of 2 and 12 only if the concentration of DEET is 10% or less and that repellents be applied no more than 3 times a day, children under 2 should not receive more than 1 application of repellent in a day and DEET-based products of any concentration should not be used on infants under 6 months.<ref>{{cite web | publisher = [[Health Canada]] | work = Healthy Living | title = Insect Repellents | date = August 2009 | url =http://www.hc-sc.gc.ca/hl-vs/iyh-vsv/life-vie/insect-eng.php | accessdate = 2010-07-09}}</ref><ref>{{cite web | publisher = [[Health Canada]] | work = Consumer Product Safety | title = Re-evaluation Decision Document: Personal insect repellents containing DEET (N,N-diethyl-m-toluamide and related compounds) | date = 2002-04-15 | url =http://publications.gc.ca/collections/Collection/H113-12-2002-1E.pdf | accessdate = 2010-07-09}}</ref> Some experts recommend against applying DEET and sunscreen simultaneously since that would increase DEET penetration; Canadian researcher, Xiaochen Gu, a professor at the University of Manitoba’s faculty of Pharmacy who led a study about mosquitos, advises that DEET should be applied 30 or more minutes later. Gu also recommends DEET sprays instead of lotions which are rubbed into the skin "forcing molecules into the skin".<ref>{{cite web |url=http://www.besthealthmag.ca/best-you/prevention/how-to-choose-the-best-bug-repellent |title=How to choose the best bug repellent |author=<!--Staff writer(s); no by-line.--> |date= |website=Best Health |publisher=Reader's Digest Association, Inc. |access-date=June 14, 2016 |quote=‘Anything intended for topical use only shouldn’t be going into the body,’ says Xiaochen Gu, a professor at the University of Manitoba’s faculty of pharmacy, who led the study.}}</ref>
Citing human health reasons, [[Health Canada]] barred the sale of insect repellents for human use that contained more than 30% DEET in a 2002 re-evaluation. The agency recommended that DEET-based products be used on children between the ages of 2 and 12 only if the concentration of DEET is 10% or less and that repellents be applied no more than 3 times a day, children under 2 should not receive more than 1 application of repellent in a day and DEET-based products of any concentration should not be used on infants under 6 months.<ref>{{cite web|publisher=[[Health Canada]] |work=Healthy Living |title=Insect Repellents |date=August 2009 |url=http://www.hc-sc.gc.ca/hl-vs/iyh-vsv/life-vie/insect-eng.php |accessdate=2010-07-09 |deadurl=yes |archiveurl=https://web.archive.org/web/20100411092758/http://www.hc-sc.gc.ca:80/hl-vs/iyh-vsv/life-vie/insect-eng.php |archivedate=2010-04-11 |df= }}</ref><ref>{{cite web | publisher = [[Health Canada]] | work = Consumer Product Safety | title = Re-evaluation Decision Document: Personal insect repellents containing DEET (N,N-diethyl-m-toluamide and related compounds) | date = 2002-04-15 | url =http://publications.gc.ca/collections/Collection/H113-12-2002-1E.pdf | accessdate = 2010-07-09}}</ref> Some experts recommend against applying DEET and sunscreen simultaneously since that would increase DEET penetration; Canadian researcher, Xiaochen Gu, a professor at the University of Manitoba’s faculty of Pharmacy who led a study about mosquitos, advises that DEET should be applied 30 or more minutes later. Gu also recommends DEET sprays instead of lotions which are rubbed into the skin "forcing molecules into the skin".<ref>{{cite web |url=http://www.besthealthmag.ca/best-you/prevention/how-to-choose-the-best-bug-repellent |title=How to choose the best bug repellent |author=<!--Staff writer(s); no by-line.--> |date= |website=Best Health |publisher=Reader's Digest Association, Inc. |access-date=June 14, 2016 |quote=‘Anything intended for topical use only shouldn’t be going into the body,’ says Xiaochen Gu, a professor at the University of Manitoba’s faculty of pharmacy, who led the study.}}</ref>
DEET is commonly used in combination with insecticides and can strengthen the toxicity of [[carbamate]] insecticides,<ref>{{cite journal | author = Moss | year = 1996 | title = Synergism of Toxicity of N,N-Diethyl-m-toluamide to German Cockroaches (Othoptera: Blattellidae) by Hydrolytic Enzyme Inhibitors | journal = J. Econ. Entomol. | volume = 89 | issue = 5 | pages = 1151–1155 | pmid = 17450648 | doi=10.1093/jee/89.5.1151}}</ref> which are also acetylcholinesterase inhibitors. These findings indicate that DEET has neurological effects on insects in addition to known olfactory effects, and that its toxicity is strengthened in combination with other insecticides.
DEET is commonly used in combination with insecticides and can strengthen the toxicity of [[carbamate]] insecticides,<ref>{{cite journal | author = Moss | year = 1996 | title = Synergism of Toxicity of N,N-Diethyl-m-toluamide to German Cockroaches (Othoptera: Blattellidae) by Hydrolytic Enzyme Inhibitors | journal = J. Econ. Entomol. | volume = 89 | issue = 5 | pages = 1151–1155 | pmid = 17450648 | doi=10.1093/jee/89.5.1151}}</ref> which are also acetylcholinesterase inhibitors. These findings indicate that DEET has neurological effects on insects in addition to known olfactory effects, and that its toxicity is strengthened in combination with other insecticides.
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==Effects on the environment==
==Effects on the environment==
Though DEET is not expected to [[bioaccumulation|bioaccumulate]], it has been found to have a slight toxicity for fresh-water [[fish]] such as [[rainbow trout]]<ref>U.S. Environmental Protection Agency. 1980. Office of Pesticides and Toxic Substances. N,N-diethyl-m-toluamide (Deet) Pesticide Registration Standard. December, 1980. 83 pp.</ref> and [[tilapia]],<ref>{{cite journal |author1=Mathai, AT |author2=Pillai, KS |author3=Deshmukh, PB | year = 1989 | title = Acute toxicity of deet to a freshwater fish, Tilapia mossambica : Effect on tissue glutathione levels | journal = [[Journal of Environmental Biology]] | volume = 10 | issue = 2 | pages = 87–91. | url = http://md1.csa.com/partners/viewrecord.php?requester=gs&collection=ENV&recid=2427671&q=DEET+fish+-permethrin&uid=791055180&setcookie=yes
Though DEET is not expected to [[bioaccumulation|bioaccumulate]], it has been found to have a slight toxicity for fresh-water [[fish]] such as [[rainbow trout]]<ref>U.S. Environmental Protection Agency. 1980. Office of Pesticides and Toxic Substances. N,N-diethyl-m-toluamide (Deet) Pesticide Registration Standard. December, 1980. 83 pp.</ref> and [[tilapia]],<ref>{{cite journal
|author1=Mathai, AT
|author2=Pillai, KS
|author3=Deshmukh, PB
|year=1989
|title=Acute toxicity of deet to a freshwater fish, Tilapia mossambica : Effect on tissue glutathione levels
|journal=[[Journal of Environmental Biology]]
|volume=10
|issue=2
|pages=87–91.
|url=http://md1.csa.com/partners/viewrecord.php?requester=gs&collection=ENV&recid=2427671&q=DEET+fish+-permethrin&uid=791055180&setcookie=yes
|deadurl=yes
|archiveurl=https://web.archive.org/web/20071107050439/http://md1.csa.com:80/partners/viewrecord.php?requester=gs&collection=ENV&recid=2427671&q=DEET+fish+-permethrin&uid=791055180&setcookie=yes
|archivedate=2007-11-07
|df=
}}</ref> and it also has been shown to be toxic for some species of freshwater [[zooplankton]].<ref>{{cite journal |author1=J. Seo |author2=Y. G. Lee |author3=S. D. Kim |author4=C. J. Cha |author5=J. H. Ahn |author6=H. G. Hur | title = Biodegradation of the Insecticide N,N-Diethyl-m-Toluamide by Fungi: Identification and Toxicity of Metabolites | year = 2005 | journal = [[Archives of Environmental Contamination and Toxicology]] | volume = 48 | pmid = 15750774 | issue = 3 | pages = 323–328 | doi = 10.1007/s00244-004-0029-9}}</ref> DEET has been detected at low concentrations in water bodies as a result of production and use, such as in the [[Mississippi River]] and its tributaries, where a 1991 study detected levels varying from 5 to 201 [[nanogram|ng]]/L.<ref>{{cite web|title=Errol Zeiger, Raymond Tice, Brigette Brevard, (1999) N,N-Diethyl-m-toluamide (DEET) <nowiki>[134-62-3]</nowiki> - Review of Toxicological Literature |url=http://ntp.niehs.nih.gov/ntp/htdocs/Chem_Background/ExSumPdf/DEET.pdf |accessdate=July 20 |format=PDF |deadurl=yes |archiveurl=https://web.archive.org/web/20121009105256/http://ntp.niehs.nih.gov/ntp/htdocs/Chem_Background/ExSumPdf/DEET.pdf |archivedate=October 9, 2012 }}</ref>
}}</ref> and it also has been shown to be toxic for some species of freshwater [[zooplankton]].<ref>{{cite journal |author1=J. Seo |author2=Y. G. Lee |author3=S. D. Kim |author4=C. J. Cha |author5=J. H. Ahn |author6=H. G. Hur | title = Biodegradation of the Insecticide N,N-Diethyl-m-Toluamide by Fungi: Identification and Toxicity of Metabolites | year = 2005 | journal = [[Archives of Environmental Contamination and Toxicology]] | volume = 48 | pmid = 15750774 | issue = 3 | pages = 323–328 | doi = 10.1007/s00244-004-0029-9}}</ref> DEET has been detected at low concentrations in water bodies as a result of production and use, such as in the [[Mississippi River]] and its tributaries, where a 1991 study detected levels varying from 5 to 201 [[nanogram|ng]]/L.<ref>{{cite web|title=Errol Zeiger, Raymond Tice, Brigette Brevard, (1999) N,N-Diethyl-m-toluamide (DEET) <nowiki>[134-62-3]</nowiki> - Review of Toxicological Literature |url=http://ntp.niehs.nih.gov/ntp/htdocs/Chem_Background/ExSumPdf/DEET.pdf |accessdate=July 20 |format=PDF |deadurl=yes |archiveurl=https://web.archive.org/web/20121009105256/http://ntp.niehs.nih.gov/ntp/htdocs/Chem_Background/ExSumPdf/DEET.pdf |archivedate=October 9, 2012 }}</ref>


Revision as of 17:19, 4 December 2016

DEET
Names
Preferred IUPAC name
N,N-Diethyl-3-methylbenzamide
Other names
N,N-Diethyl-m-toluamide
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.004.682 Edit this at Wikidata
KEGG
UNII
  • InChI=1S/C12H17NO/c1-4-13(5-2)12(14)11-8-6-7-10(3)9-11/h6-9H,4-5H2,1-3H3 checkY
    Key: MMOXZBCLCQITDF-UHFFFAOYSA-N checkY
  • InChI=1S/C12H17NO/c1-4-13(5-2)12(14)11-8-6-7-10(3)9-11/h6-9H,4-5H2,1-3H3
    Key: MMOXZBCLCQITDF-UHFFFAOYAE
  • O=C(c1cc(ccc1)C)N(CC)CC
Properties
C12H17NO
Molar mass 191.27 g/mol
Density 0.998 g/mL
Melting point −33 °C (−27 °F; 240 K)
Boiling point 288 to 292 °C (550 to 558 °F; 561 to 565 K)
Pharmacology
P03BX02 (WHO) QP53GX01 (WHO)
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
2
1
0
Safety data sheet (SDS) External MSDS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

N,N-Diethyl-meta-toluamide, also called DEET (/diːt/) or diethyltoluamide, is the most common active ingredient in insect repellents. It is a slightly yellow oil intended to be applied to the skin or to clothing, and provides protection against mosquitoes, ticks, fleas, chiggers, leeches, and many biting insects.

History

DEET was developed in 1944[1] by Samuel Gertler[1] of the United States Department of Agriculture for use by the United States Army,[2] following its experience of jungle warfare during World War II. It was originally tested as a pesticide on farm fields, and entered military use in 1946 and civilian use in 1957. It was used in Vietnam and Southeast Asia.[3]

In it's original form known as "bug juice", the application solution for DEET was composed of 75% DEET and ethanol.[4] Later, a new application of the repellant was developed by U.S. Army and the USDA consisted of DEET and other polymers that extended the release of the DEET and reduced its evaporation rate.[4] This extended release application was registered by the EPA in 1991.[4]

Preparation

A slightly yellow liquid at room temperature, it can be prepared by converting m-toluic acid (3-methylbenzoic acid) to the corresponding acyl chloride, and allowing it to react with diethylamine:[5][6]

Mechanism and effectiveness

DEET was historically believed to work by blocking insect olfactory receptors for 1-octen-3-ol, a volatile substance that is contained in human sweat and breath. The prevailing theory was that DEET effectively "blinds" the insect's senses so that the biting/feeding instinct is not triggered by humans or other animals which produce these chemicals. DEET does not appear to affect the insect's ability to smell carbon dioxide, as had been suspected earlier.[7][8]

However, more recent evidence shows that DEET serves as a true repellent in that mosquitoes intensely dislike the smell of the chemical.[9] A type of olfactory receptor neuron in special antennal sensilla of mosquitoes that is activated by DEET, as well as other known insect repellents such as eucalyptol, linalool, and thujone, has been identified. Moreover, in a behavioral test, DEET had a strong repellent activity in the absence of body odor attractants such as 1-octen-3-ol, lactic acid, or carbon dioxide. Both female and male mosquitoes showed the same response.[9][10]

A 2011 structural study (PDB: 3N7H) revealed that DEET binds to Anopheles gambiae odorant binding protein 1 (AgamOBP1) with high shape complementarity, suggesting that AgamOBP1 is a molecular target of DEET and perhaps other repellents.[11]

A 2013 study suggests that mosquitoes can at least temporarily overcome or adapt to the repellent effect of DEET after an initial exposure, representing a non-genetic behavioral change.[12] This observation, if verified, has significant implications for how repellent effectiveness should be assessed.

A highly conserved protein member of the ionotropic receptor family, IR40a, has recently been identified as a putative DEET receptor in the fly antenna. The neurons expressing IR40a respond to DEET in an IR40a dependent manner. Avoidance to DEET vapors is lost in flies that lack IR40a. Other repellent chemicals that are structurally related to DEET also activate the same receptor and repel mosquitoes and flies, suggesting that this receptor can be used to screen for new repellents.[13]

The hypothesis that IR40a is involved in DEET reception in mosquitoes has been tested in the southern house mosquito, Culex quinquefasciatus.[14] Reducing CquiIR40a transcript levels did not affect DEET-elicited behavior or electroantennographic (EAG) responses thus suggesting that IR40a is not involved in DEET reception in Culex mosquitoes. An antennae-specific odorant receptor, CquiOR136, was demonstrated to respond to DEET and other insect repellents. Similar knockout experiments showed that EAG responses to DEET recorded from mosquitoes with reduced CquiOR136 transcript levels were dramatically lower. Additionally, behavioral tests showed that this phenotype was not repelled by DEET. In conclusion, these results suggest that CquiOR136, not CquiIR40a, is involved in DEET reception in the southern house mosquito.[14]

Concentrations

DEET is often sold and used in spray or lotion in concentrations up to 100%.[15] Consumer Reports found a direct correlation between DEET concentration and hours of protection against insect bites. 100% DEET was found to offer up to 12 hours of protection while several lower concentration DEET formulations (20%-34%) offered 3–6 hours of protection.[16] Other research has corroborated the effectiveness of DEET.[17] The Centers for Disease Control and Prevention recommends 30-50% DEET to prevent the spread of pathogens carried by insects.[18]

Effects on health

As a precaution, manufacturers advise that DEET products should not be used under clothing or on damaged skin, and that preparations be washed off after they are no longer needed or between applications.[19] DEET can act as an irritant;[7] in rare cases, it may cause severe epidermal reactions.[19] Other symptoms that can occur are breathing difficulty, burning eyes, headaches.[20]

In the DEET Reregistration Eligibility Decision (RED) in 1998, the United States Environmental Protection Agency (EPA) reported 14 to 46 cases of potential DEET-associated seizures, including 4 deaths. The EPA states: "... it does appear that some cases are likely related to DEET toxicity," but observed that with 30% of the US population using DEET, the likely seizure rate is only about one per 100 million users.[21]

The Pesticide Information Project of Cooperative Extension Offices of Cornell University states that "Everglades National Park employees having extensive DEET exposure were more likely to have insomnia, mood disturbances and impaired cognitive function than were lesser exposed co-workers".[22]

When used as directed, products containing between 10% and 30% DEET have been found by the American Academy of Pediatrics to be safe to use on children, as well as adults, but recommends that DEET not be used on infants less than two months old.[19]

Citing human health reasons, Health Canada barred the sale of insect repellents for human use that contained more than 30% DEET in a 2002 re-evaluation. The agency recommended that DEET-based products be used on children between the ages of 2 and 12 only if the concentration of DEET is 10% or less and that repellents be applied no more than 3 times a day, children under 2 should not receive more than 1 application of repellent in a day and DEET-based products of any concentration should not be used on infants under 6 months.[23][24] Some experts recommend against applying DEET and sunscreen simultaneously since that would increase DEET penetration; Canadian researcher, Xiaochen Gu, a professor at the University of Manitoba’s faculty of Pharmacy who led a study about mosquitos, advises that DEET should be applied 30 or more minutes later. Gu also recommends DEET sprays instead of lotions which are rubbed into the skin "forcing molecules into the skin".[25]

DEET is commonly used in combination with insecticides and can strengthen the toxicity of carbamate insecticides,[26] which are also acetylcholinesterase inhibitors. These findings indicate that DEET has neurological effects on insects in addition to known olfactory effects, and that its toxicity is strengthened in combination with other insecticides.

Detection in body fluids

DEET may be quantitated in blood, plasma or urine by gas or liquid chromatography-mass spectrometry to confirm a diagnosis of poisoning in hospitalized patients or to provide evidence in a medicolegal death investigation. Blood or plasma DEET concentrations are expected to be in a range of 0.3-3.0 mg/L during the first 8 hours after dermal application in persons using the chemical appropriately, >6 mg/L in intoxicated patients and >100 mg/L in victims of acute intentional oral overdose.[27][28]

Effects on materials

DEET is an effective solvent,[7] and may dissolve some watch crystals,[4] plastics, rayon, spandex, other synthetic fabrics, and painted or varnished surfaces including nail polish.

Effects on the environment

Though DEET is not expected to bioaccumulate, it has been found to have a slight toxicity for fresh-water fish such as rainbow trout[29] and tilapia,[30] and it also has been shown to be toxic for some species of freshwater zooplankton.[31] DEET has been detected at low concentrations in water bodies as a result of production and use, such as in the Mississippi River and its tributaries, where a 1991 study detected levels varying from 5 to 201 ng/L.[32]

See also

References

  1. ^ a b N,N-diethylbenzamide as an insect repellent, 1946-10-01 {{citation}}: Unknown parameter |country-code= ignored (help); Unknown parameter |inventor-first= ignored (help); Unknown parameter |inventor-last= ignored (help); Unknown parameter |patent-number= ignored (help)
  2. ^ Katz, Tracy (February 14, 2008). "Insect repellents: Historical perspectives and new developments". Journal of the American Academy of Dermatology. 58 (5): 865–871. doi:10.1016/j.jaad.2007.10.005. Retrieved 2015-08-16.
  3. ^ Committee on Gulf War and Health: Literature Review of Pesticides and Solvents (2003). Gulf War and Health: Volume 2. Insecticides and Solvents. Washington, D.C.: National Academies Press. ISBN 978-0-309-11389-2.
  4. ^ a b c d Kitchen; Lawrence. "The role of the United States military in the development of vector control products, including insect repellents, insecticides, and bed nets". Journal of Vector Ecology. 34 (1): 50–61.
  5. ^ Wang, Benjamin J-S. (1974). "An interesting and successful organic experiment (CEC)". J. Chem. Ed. 51 (10): 631. doi:10.1021/ed051p631.2.
  6. ^ Donald L. Pavia (2004). Introduction to organic laboratory techniques (Google Books excerpt). Cengage Learning. pp. 370–376. ISBN 978-0-534-40833-6.
  7. ^ a b c Anna Petherick (2008-03-13). "How DEET jams insects' smell sensors". Nature News. Retrieved 2008-03-16.
  8. ^ Mathias Ditzen, Maurizio Pellegrino, Leslie B. Vosshall (2008). "Insect Odorant Receptors Are Molecular Targets of the Insect Repellent DEET". Sciencexpress. 319 (5871): 1838–42. doi:10.1126/science.1153121. PMID 18339904.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  9. ^ a b Syed, Z.; Leal, WS (2008). "Mosquitoes smell and avoid the insect repellent DEET". Proc. Natl. Acad. Sci. USA. 105 (36): 13598–603. doi:10.1073/pnas.0805312105. PMC 2518096. PMID 18711137.
  10. ^ Fox, Maggie; David Wiessler (Aug 18, 2008). "For mosquitoes, DEET just plain stinks". Washington. Reuters. Archived from the original on August 11, 2011. Retrieved August 11, 2011. {{cite news}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  11. ^ Tsitsanou, K.E.; et al. (2012). "Anopheles gambiae odorant binding protein crystal complex with the synthetic repellent DEET: implications for structure-based design of novel mosquito repellents". Cell Mol Life Sci. 69 (2): 283–97. doi:10.1007/s00018-011-0745-z. PMID 21671117.
  12. ^ Stanczyk, Nina M.; Brookfield, John F. Y.; Field, Linda M.; Logan, James G. (2013). Vontas, John (ed.). "Aedes aegypti Mosquitoes Exhibit Decreased Repellency by DEET following Previous Exposure". Plos One. 8 (2) (published 20 February 2013): e54438. doi:10.1371/journal.pone.0054438Template:Inconsistent citations {{cite journal}}: Unknown parameter |laydate= ignored (help); Unknown parameter |laysource= ignored (help); Unknown parameter |laysummary= ignored (help)CS1 maint: postscript (link) CS1 maint: unflagged free DOI (link)
  13. ^ Kain, Pinky; Boyle, Sean Michael; Tharadra, Sana Khalid; Guda, Tom; Pham, Christine; Dahanukar, Anupama; Ray, Anandasankar (2013). "Odour receptors and neurons for DEET and new insect repellents". Nature. doi:10.1038/nature12594.
  14. ^ a b Xu, Pingxi; Choo, Young-Moo; De La Rosa, Alyssa; Leal, Walter S. (2014). "Mosquito odorant receptor for DEET and methyl jasmonate". Proceedings of the National Academy of Sciences. 111 (46): 16592–16597. doi:10.1073/pnas.1417244111. ISSN 0027-8424.
  15. ^ Template:HPD
  16. ^ Matsuda, Brent M.; Surgeoner, Gordon A.; Heal, James D.; Tucker, Arthur O.; Maciarello, Michael J. (1996). "Essential oil analysis and field evaluation of the citrosa plant "Pelargonium citrosum" as a repellent against populations of Aedes mosquitoes". Journal of the American Mosquito Control Association. 12 (1): 69–74. PMID 8723261.
  17. ^ David Williamson (3 July 2002). "Independent study: DEET products superior for fending off mosquito bites" (Press release). University of North Carolina.
  18. ^ "Protection against Mosquitoes, Ticks, Fleas and Other Insects and Arthropods". Travelers' Health - Yellow Book. Centers for Disease Control and Prevention. 2009-02-05.
  19. ^ a b c "Insect Repellent Use and Safety". West Nile Virus. Centers for Disease Control and Prevention. 2007-01-12.
  20. ^ "Bug spray poisoning". U.S. National Library of Medicine. October 2015. Retrieved 2016-06-25.
  21. ^ "Reregistration Eligibility Decision: DEET" (PDF). U.S. Environmental Protection Agency, Office of Prevention, Pesticides, and Toxic Substances. September 1998. pp. 39–40. Archived from the original (PDF) on October 21, 2012. Retrieved 2012-09-08. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  22. ^ "DEET". Pesticide Information Profile. EXTOXNET. October 1997. Retrieved 2007-09-26.
  23. ^ "Insect Repellents". Healthy Living. Health Canada. August 2009. Archived from the original on 2010-04-11. Retrieved 2010-07-09. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  24. ^ "Re-evaluation Decision Document: Personal insect repellents containing DEET (N,N-diethyl-m-toluamide and related compounds)" (PDF). Consumer Product Safety. Health Canada. 2002-04-15. Retrieved 2010-07-09.
  25. ^ "How to choose the best bug repellent". Best Health. Reader's Digest Association, Inc. Retrieved June 14, 2016. 'Anything intended for topical use only shouldn't be going into the body,' says Xiaochen Gu, a professor at the University of Manitoba's faculty of pharmacy, who led the study.
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  28. ^ Baselt RC (2014). Disposition of toxic drugs and chemicals in man, 10th edition. Seal Beach, Ca.: Biomedical Publications. p. 650. ISBN 978-0-9626523-9-4.
  29. ^ U.S. Environmental Protection Agency. 1980. Office of Pesticides and Toxic Substances. N,N-diethyl-m-toluamide (Deet) Pesticide Registration Standard. December, 1980. 83 pp.
  30. ^ Mathai, AT; Pillai, KS; Deshmukh, PB (1989). "Acute toxicity of deet to a freshwater fish, Tilapia mossambica : Effect on tissue glutathione levels". Journal of Environmental Biology. 10 (2): 87–91. Archived from the original on 2007-11-07. {{cite journal}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  31. ^ J. Seo; Y. G. Lee; S. D. Kim; C. J. Cha; J. H. Ahn; H. G. Hur (2005). "Biodegradation of the Insecticide N,N-Diethyl-m-Toluamide by Fungi: Identification and Toxicity of Metabolites". Archives of Environmental Contamination and Toxicology. 48 (3): 323–328. doi:10.1007/s00244-004-0029-9. PMID 15750774.
  32. ^ "Errol Zeiger, Raymond Tice, Brigette Brevard, (1999) N,N-Diethyl-m-toluamide (DEET) [134-62-3] - Review of Toxicological Literature" (PDF). Archived from the original (PDF) on October 9, 2012. Retrieved July 20. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

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