|IUPAC name||undec-10-enoic acid|
| Except where noted otherwise, data are given for|
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references
Undecylenic / Undecenoic Acid is an organic unsaturated fatty acid derived from natural castor oil. It is the common name of the 10-undecenoic acid (CH2CH(CH2)8COOH). It is used in the manufacture of pharmaceuticals, cosmetics and perfumery including anti-dandruff shampoos, anti-microbial powders and as a musk in perfumes and aromas.Undecylenic acid is produced by cracking of Castor oil under pressure.
Undecylenic acid is a natural fungicide and is FDA approved in over-the-counter medications for skin disorders or problems. It is the active ingredient in medications for skin infections, and relieves itching, burning, and irritation. For example, it is used against fungal skin infections such as athlete's foot, ringworm, Candida albicans.  It is also used in the treatment of psoriasis.
Products That Contain Undecylenic Acid
Given in alphabetical order. Percentage content of Undecylenic Acid given in parenthesis. Concentrations greater than 10% are meant for application to nails and may be too strong for skin application (i.e. dilution may be necessary).
- DermaZinc Cream (% not listed)
- Elon Dual Defense Anti-Fungal (25%)
- FungiCure Anti-fungal Liquid, extra strength (10%)
- Fungi Nail Anti-fungal Solution (25%)
- Fungus-No-More (25%)
- Tineacide Antifungal Cream (10%)
- ↑ United States International Trade Commission Memorandum (PDF). USITC. Retrieved on 2007-01-02. - see page 2 of link
- ↑ Undecylenic Acid in Psoriasis (PDF). CMAJ. Retrieved on 2007-01-05. - see page 2/362 of link
- ↑ Ingredient List P-Z (PDF). Retrieved on 2007-01-02. - see page 65 of this link
- ↑ Undecylenic Acid in Psoriasis (PDF). CMAJ. Retrieved on 2007-01-05. - see page 4/364 of link
- ↑ Effect of undecylenic acid as a topical microbicide against genital herpes infection in mice and guinea pigs.. Pubmed. Retrieved on 2007-01-18.
Antifungals (D01 and J02)
|Antibiotics||Griseofulvin • polyene antimycotics (Natamycin, Nystatin)|
|Topical azoles||imidazoles (Bifonazole, Clomidazole, Clotrimazole, Econazole, Fenticonazole, Ketoconazole, Isoconazole, Miconazole, Oxiconazole, Sertaconazole, Sulconazole, Tioconazole) • triazoles (Fluconazole) • benzimidazole (Thiabendazole)|
|Other topicals||Ciclopirox • Ethylparaben • Flucytosine • Salicylic acid • Selenium sulfide • Tolnaftate • Undecylenic acid • allylamines (Amorolfine, Butenafine, Naftifine, Terbinafine)|
|For systemic use||Griseofulvin • allylamine (Terbinafine) • polyene antimycotic (Amphotericin B) • triazoles (Itraconazole, Posaconazole, Voriconazole) • echinocandins (Anidulafungin, Caspofungin, Micafungin)|
|Other||Tea tree oil • citronella oil • lemon grass • orange oil • patchouli • lemon myrtle|
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