Chemistry:Stearidonic acid

Stearidonic acid

Names
Preferred IUPAC name (6Z,9Z,12Z,15Z)-Octadeca-6,9,12,15-tetraenoic acid
Identifiers
CAS Number	20290-75-9 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:32389 Y
ChEMBL	ChEMBL484430 Y
ChemSpider	4471933 Y
PubChem CID	5312508
UNII	P4CEK3495O Y
InChI InChI=1S/C18H28O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h3-4,6-7,9-10,12-13H,2,5,8,11,14-17H2,1H3,(H,19,20)/b4-3-,7-6-,10-9-,13-12- Y Key: JIWBIWFOSCKQMA-LTKCOYKYSA-N Y InChI=1/C18H28O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h3-4,6-7,9-10,12-13H,2,5,8,11,14-17H2,1H3,(H,19,20)/b4-3-,7-6-,10-9-,13-12- Key: JIWBIWFOSCKQMA-LTKCOYKYBT
SMILES O=C(O)CCCC\C=C/C\C=C/C\C=C/C\C=C/CC
Properties
Chemical formula	C18H28O2
Molar mass	276.420 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

Stearidonic acid (SDA: C₁₈H₂₈O₂; 18:4, n-3) is an ω-3 fatty acid, sometimes called moroctic acid. It is biosynthesized from alpha-linolenic acid (ALA: C₁₈H₃₀O₂; 18:3, n-3) by the enzyme delta-6-desaturase, that removes two hydrogen (H) atoms from a fatty acid, creating a carbon/carbon double bonding, via an oxygen requiring unsaturation. SDA also act as precursor for the rapid synthesis of longer chain fatty acids, called N-acylethanolamine (NAEs), involved in many important biological processes. Natural sources of this fatty acid are the seed oils of hemp, blackcurrant, corn gromwell, and Echium plantagineum, and the cyanobacterium Spirulina. SDA can also be synthesized in a lab. A GMO soybean source is approved by the European Food Safety Authority.

See also

• List of omega-3 fatty acids
• Omega-3 fatty acids
• Essential fatty acids