Docosadienoic acid

Docosadienoic acid is a polyunsaturated very long-chain fatty acid (VLCFA) with a 22-carbon backbone and two double bonds.^[2]

Docosadienoic acid

Names
IUPAC name (13Z, 16Z)-docosa-13,16-dienoic acid
Other names DDA[1]
Identifiers
CAS Number	26764-24-9
3D model (JSmol)	Interactive image
ChemSpider	4471979
KEGG	C16533
PubChem CID	53741802
UNII	4L3DC2UF5X
InChI InChI=1S/C22H40O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22(23)24/h18-21H,2-17H2,1H3,(H,23,24) Key: CVCXSNONTRFSEH-UHFFFAOYSA-N
SMILES CCCCCCCCCCCCCCCCCC=CC=CC(=O)O
Properties
Chemical formula	C22H40O2
Molar mass	336.560 g·mol−1
Density	0.9 g/cm³
Solubility in water	insoluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Isomers

The acid exists in several isomeric forms,^[3] depending on the positions and configurations of the double bonds. These isomers play important roles in biological systems and are used in chemical synthesis.^[4]

Physical properties

Insoluble in water. Soluble in chloroform, hexane, ethanol.

Natural occurrence

Docosadienoic acid can be detected in modest concentrations, generally not exceeding 3%, in the seed oils of many plants, particularly Cruciferae and Ranunculaceae.^[5]