(or 3,7,11,15-tetramethyl hexadecanoic acid
) is present in human diet or in animal tissues where it may be derived from chlorophyll
in plant extracts. Phytanic acid derives from the corresponding alcohol, phytol
, and is oxidized into pristanic acid
It can also characterize a precise human pathology, Refsum's syndrome
This inherited neurological disorder is characterized by an accumulation of a normal metabolite of phytol (phytanic acid) in blood and tissues, and the disorder was later found to be related to deficiency in the α-oxidation pathway in the liver.
Function in other animals
acids such as 4,8,12-trimethyltridecanoic, phytanic and pristanic acids
, which indicates that these acids may have chemotaxonomical
significance for both marine
and freshwater sponges.
Phytanic acid accumulates in the fat of ruminant animals. Most animals lack the necessary enzyme to cleave phytol from chlorophyll. The rumen microorganisms, however, can cleave this bond and release phytol, which is converted to phytanic acid and subsequently incorparated into the animal's fat.