Docosahexaenoic acid (DHA) is an omega3 fatty acid that is a primary structural component, cerebral cortex, skin, sperm, testicles and retina. It can be synthesized from alpha-linolenic acid or obtained directly from maternal milk or fish oil.DHA's structure is a carboxylic acid(~oic acid) with a 22carbon chain  and six cis double bonds .the first double bond is located at the third carbon from the omega end.[3] Itstrivial name is cervonic acid, its systematic name is all-cis-docosa-4,7,10,13,16,19-hexa-enoic acid, and its shorthand name is 22:6(n-3) in the nomenclature of fatty acids.

Application Area:
1.DHA is widely used as a food supplement,it was first used primarily in infant formulas,to promote fetal brain development.
2.DHA has the antioxidant and anti-aging function.
3.DHA can improve Blood Circulation,and lower blood pressure,it can prevention and cure cerebral thrombosis
4.DHA also can reducing blood fat.