Exocarpic acid

Exocarpic acid
Names
	IUPAC name (E)-octadec-13-en-9,11-diynoic acid
	Other names Octadeca-trans-13-ene-9,11-diynoic acid
Identifiers
CAS Number	13089-73-1 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:191240;
ChEMBL	ChEMBL2204412;
ChemSpider	4472109;
PubChem CID	5312684;
	InChI InChI=1/C18H26O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h5-6H,2-4,11-17H2,1H3,(H,19,20)/b6-5+/f/h19H Key: ACHMRCSARDWYGC-AATRIKPKSA-N;
	SMILES C(CCCCCCCC#CC#C\C=C\CCCC)(=O)O;
Properties
Chemical formula	C18H26O2
Molar mass	274.404 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Exocarpic acid is an unsaturated, conjugated fatty acid with one double bond and two triple bonds. It is isomeric to isanic acid and belongs to the class of alkyne and alkenoic acids, as well as the diynes and enynes. The acid's delta notation is 18:3-delta-9a,11a,13t. Its structural formula is CH ₃(CH₂)₃-CH=CH-C≡CC≡C-(CH₂)₇-COOH.

The acid was initially isolated in 1959, by H. H. Hatt and co-workers, from the roots of the Australian tree Exocarpos cupressiformis; from this genus they derived the common name of exocarpic acid.