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Docosapentaenoic acid designates any straight chain 22:5 fatty acid.


See essential fatty acid#nomenclature for nomenclature.

all-cis-4,7,10,13,16-docosapentaenoic acid (osbond acid)[edit]

The chemical structure of osbond acid showing physiological numbering (red) and chemical numbering (blue) conventions.

all-cis-4,7,10,13,16-docosapentaenoic acid is an ω-6 fatty acid with the trivial name osbond acid. It is formed by an elongation and desaturation of arachidonic acid 20:4 ω-6.

all-cis-7,10,13,16,19-docosapentaenoic acid (clupanodonic acid)[edit]

The chemical structure of clupanodonic acid showing physiological numbering (red) and chemical numbering (blue) conventions.

all-cis-7,10,13,16,19-docosapentaenoic acid is an ω-3 fatty acid with the trivial name clupanodonic acid, commonly called DPA. It is an intermediary between eicosapentaenoic acid (EPA, 20:5 ω-3) and docosahexaenoic acid (DHA, 22:6 ω-3). Seal oil is a rich source.[1]

Docosapentaenoic acid deficiency[edit]

In mammals, clupanodonic acid (ω-3 fatty acid) deficiency is accompanied by an increase of the osbond acid (ω-6 fatty acid) isomer; the Osbond/DHA ratio is thus a marker of dietary DHA sufficiency.[2] However, this usage has been questioned.[3]


  1. ^ Ho, Cosmos. "The Studies of Seal Oil". The Benefits of Omega 3 Fatty Acids found In Seal Oil, as Opposed to Fish and Flaxseed Oils. Newfoundland Health Foods. Retrieved December 24, 2013. 
  2. ^ Hornstra, Gerard; Al, Monique D.M.; Houwelingen, Adriana C.v.; Foreman-van Drongelen, Magritha M.H.P. (1995). "Essential fatty acids in pregnancy and early human development". Eur. J. Obstet. Gynecol. Reprod. Biol. 61 (1): 57–62. doi:10.1016/0028-2243(95)02153-J. ISSN 0301-2115. Retrieved December 24, 2013. Closed access
  3. ^ Innis, Sheila M; Vaghri, Ziba; King, D Janette (September 2004). "n−6 Docosapentaenoic acid is not a predictor of low docosahexaenoic acid status in Canadian preschool children1,2,3". Am. J. Clin. Nutr. 80 (3): 768–773. open access publication - free to read

See also[edit]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Docosapentaenoic_acid — Please support Wikipedia.
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Nutritional Outlook

Nutritional Outlook
Fri, 26 Sep 2014 18:30:00 -0700

“There was no strong evidence that circulating fatty acids are important predictors of prostate cancer risk,” concluded the team. “It is not clear whether the modest associations of stearic, eicosapentaenoic (EPA), and docosapentaenoic acid (DHA) are ...
Wed, 15 Oct 2014 00:05:46 -0700

In a previous opinion on the Tolerable Upper Intake Level of EPA, DHA and docosapentaenoic acid (DPA), the Panel concluded that supplemental intake of EPA and DHA combined at doses up to 5 g/day ...

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