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Revision as of 14:42, 10 January 2012 editBeetstra (talk | contribs)Edit filter managers, Administrators172,031 edits Saving copy of the {{chembox}} taken from revid 463835117 of page Undecylenic_acid for the Chem/Drugbox validation project (updated: '').  Latest revision as of 03:52, 3 May 2024 edit Hydroxyphencyclidine (talk | contribs)230 editsm see also unsaturated fatty acidsTag: Visual edit 
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{{ambox | text = This page contains a copy of the infobox ({{tl|chembox}}) taken from revid of page ] with values updated to verified values.}}
{{chembox {{chembox
| Verifiedfields = changed
| verifiedrevid = 444239527
| Watchedfields = changed
|ImageFile=Undecylenic acid.png
| verifiedrevid = 470619622
|ImageSize=200px
| Name =
|IUPACName=undec-10-enoic acid
| ImageFile = Undecylenic acid.svg
|OtherNames=
| PIN = Undec-10-enoic acid
|Section1= {{Chembox Identifiers
| OtherNames = 10-Undecenoic acid
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| Section1 = {{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 10771160 | ChemSpiderID = 10771160
| UNII_Ref = {{fdacite|correct|FDA}} | UNII_Ref = {{fdacite|changed|FDA}}
| UNII = K3D86KJ24N | UNII = K3D86KJ24N
| InChI = 1/C11H20O2/c1-2-3-4-5-6-7-8-9-10-11(12)13/h2H,1,3-10H2,(H,12,13) | InChI = 1/C11H20O2/c1-2-3-4-5-6-7-8-9-10-11(12)13/h2H,1,3-10H2,(H,12,13)
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| StdInChIKey = FRPZMMHWLSIFAZ-UHFFFAOYSA-N | StdInChIKey = FRPZMMHWLSIFAZ-UHFFFAOYSA-N
| CASNo_Ref = {{cascite|correct|CAS}} | CASNo_Ref = {{cascite|correct|CAS}}
| CASNo=112-38-9 | CASNo = 112-38-9
| PubChem=5634 | PubChem = 5634
| ChEBI_Ref = {{ebicite|correct|EBI}} | ChEBI_Ref = {{ebicite|correct|EBI}}
| ChEBI = 35045 | ChEBI = 35045
| SMILES=C=CCCCCCCCCC(=O)O | SMILES=C=CCCCCCCCCC(=O)O
| MeSHName=Undecylenic+acid | MeSHName=Undecylenic+acid
}} }}
|Section2= {{Chembox Properties | Section2 = {{Chembox Properties
| C = 11 | C=11 | H=20 | O=2
| H = 20 | Appearance =
| O = 2 | Density = 0.912 g/mL
| MeltingPtC = 23
| Appearance=
| BoilingPtC = 275
| Density=
| Solubility =
| MeltingPt=
| BoilingPt=
| Solubility=
}} }}
|Section3= {{Chembox Hazards | Section3 =
| Section4 =
| MainHazards=
| FlashPt= | Section5 =
| Section6 = {{Chembox Pharmacology
| Autoignition=
| ATCCode_prefix = D01
| ATCCode_suffix = AE04
}}
| Section7 = {{Chembox Hazards
| MainHazards =
| FlashPt =
| AutoignitionPt =
}} }}
}} }}

'''Undecylenic acid''' is an ] with the formula CH<sub>2</sub>=CH(CH<sub>2</sub>)<sub>8</sub>CO<sub>2</sub>H. It is an ] ]. It is a colorless oil. Undecylenic acid is mainly used for the production of ] and in the treatment of fungal infections of the skin, but it is also a precursor in the manufacture of many ], personal hygiene products, ], and perfumes.<ref name=Ullmann/> ] and ]s of undecylenic acid are known as '''undecylenates'''.

==Preparation==
Undecylenic acid is prepared by ] of ], which is derived from ]. Specifically, the ] ] of ricinoleic acid is ] to yield both undecylenic acid and ]. The process is conducted at 500–600&nbsp;°C in the presence of steam.<ref name=Ullmann>David J. Anneken, Sabine Both, Ralf Christoph, Georg Fieg, Udo Steinberner, Alfred Westfechtel "Fatty Acids" in ''Ullmann's Encyclopedia of Industrial Chemistry'', 2006, Wiley-VCH, Weinheim. {{doi|10.1002/14356007.a10_245.pub2}}</ref><ref>{{Cite book | author = A. Chauvel, G. Lefebvre| title = Petrochemical Processes: Technical and Economic Characteristics | chapter = Chapter 2 | page = 277 | location = Paris | date = 1989 | isbn = 2-7108-0563-4}}</ref> The methyl ester is then ].

:]

==General commercial uses==
Undecylenic acid is converted to ] on an industrial scale. This aminocarboxylic acid is the precursor to Nylon-11.<ref name=Ullmann/>

Undecylenic acid is reduced to undecylene aldehyde, which is valued in perfumery. The acid is first converted to the ], which allows selective reduction.<ref>{{Ullmann | author = Christian Kohlpaintner, Markus Schulte, Jürgen Falbe, Peter Lappe, Jürgen Weber | title = Aldehydes, Aliphatic | doi = 10.1002/14356007.a01_321.pub2}}</ref>

===Medical uses===
{{more medical citations needed|date=July 2015}}
Undecylenic acid is an active ingredient in medications for skin infections, and to relieve itching, burning, and irritation associated with skin problems. For example, it is used against ], such as ], ], ],<ref name=fda/> or other generalized infections by '']''.<ref name="pmid26902505">{{cite journal|last1=Shi|first1=Dongmei|last2=Zhao|first2=Yaxin|last3=Yan|first3=Hongxia|last4=Fu|first4=Hongjun|last5=Shen|first5=Yongnian|last6=Lu|first6=Guixia|last7=Mei|first7=Huan|last8=Qiu|first8=Ying|last9=Li|first9=Dongmei|last10=Liu|first10=Weida|title=Antifungal effects of undecylenic acid on the biofilm formation of Candida albicans|journal=International Journal of Clinical Pharmacology and Therapeutics|date=1 May 2016|volume=54|issue=5|pages=343–353|doi=10.5414/CP202460 |pmid=26902505}}</ref> When used for ], it can result in extreme burning.{{medcn|date=July 2015}} In some case studies of tinea versicolor, pain and burning result from fungicide application. In a review of placebo-controlled trials, undecenoic acid was deemed efficacious, alongside prescription azoles (e.g., ]) and allylamines (e.g., ]<ref>{{cite journal|last1=Crawford|first1=F|last2=Hollis|first2=S|title=Topical treatments for fungal infections of the skin and nails of the foot.|journal=The Cochrane Database of Systematic Reviews|date=18 July 2007|volume=2007|issue=3|pages=CD001434|doi=10.1002/14651858.CD001434.pub2|pmid=17636672|pmc=7073424}}</ref>). Undecylenic acid is also a precursor to antidandruff shampoos and antimicrobial powders.<ref>{{cite web | title=United States International Trade Commission Memorandum | url=http://www.usitc.gov/tata/hts/other/rel_doc/bill_reports/106c/hr-3762.pdf | publisher=USITC | access-date=2007-01-02 |archive-url = https://web.archive.org/web/20060924201130/http://www.usitc.gov/tata/hts/other/rel_doc/bill_reports/106c/hr-3762.pdf <!-- Bot retrieved archive --> |archive-date = 2006-09-24}} - see page 2 of link.{{verify source|date=July 2015}}</ref>

In terms of the mechanism underlying its antifungal effects against ''Candida albicans'', undecylenic acid inhibits morphogenesis. In a study on denture liners, undecylenic acid in the liners was found to inhibit conversion of yeast to the ] (which are associated with active infection), via inhibition of fatty acid biosynthesis. The mechanism of action and effectiveness in fatty acid-type antifungals is dependent on the number of carbon atoms in the chain, with efficacy increasing with the number of atoms in the chain.{{citation needed|date=November 2023}}

===U.S. FDA approval===
Undecylenic acid is approved by the U.S. ] for topical route and is listed in the Code of Federal Regulations.<ref name=fda> CFR Title 21, Volume 5, Chapter 1, Subchapter D, Part 333, Subpart C, Sec. (§333.210)</ref>

==Research uses==
Undecylenic acid has been used as a linking molecule, because it is a ]. Specifically it is an α,ω- (terminally ]) bifunctional agent. For instance, the title compound has been used to prepare silicon-based biosensors, linking silicon transducer surfaces to the terminal double bond of undecylenic acid (forming an Si-C bond), leaving the ] groups available for ] of biomolecules (e.g., proteins).<ref>{{cite journal | doi = 10.1021/jp7119922 |author1=A. Moraillon |author2=A. C. Gouget-Laemmel |author3=F. Ozanam |author4=J.-N. Chazalviel |name-list-style=amp | title = Amidation of Monolayers on Silicon in Physiological Buffers: A Quantitative IR Study | journal = J. Phys. Chem. C | year = 2008 | volume = 112 | issue = 18 | pages = 7158–7167}}</ref>{{primary source inline|date=July 2015}}

== See also ==

* ]

==References==
{{reflist}}

{{Antifungals}}

McLain N, Ascanio R, Baker C, et al. Undecylenic acid inhibits morphogenesis of
Candida albicans. Antimicrob Agents
Chemother 2000;44:2873-2875

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