List of unsaturated fatty acids

## Fatty acid molecular species 
### Mono-unsaturated fatty acid 
These fatty acids have one unsaturated bond.

#### Crotonic acid 
**Crotonic acid** has 4 carbons. Their IUPAC name is C3H5 CO2H. Molecular weight 86.09, melting point 72–74&nbsp;°C, boiling point 180–181&nbsp;°C, specific gravity 1.027. CAS registry number 107-93-7.

#### Myristoleic 
**Myristoleic acid** has 14 carbons. Their IUPAC name is C13H25CO2H. Molecular weight 226.36, melting point of −4.5 – −4&nbsp;°C. CAS Registry Number 544-64-9.

#### Palmitoleic acid 
**Palmitoleic acid** has 16 carbons. Molecular weight 254.41, melting point 5&nbsp;°C, specific gravity 0.894. CAS Registry Number 373-49-9.

#### Sapienic acid 
**Sapienic acid** has 16 carbons. Molecular weight 254.41. CAS Registry Number 17004-51-2.

#### Oleic acid 
**Oleic acid** has 18 carbons. Molecular weight 282.46, melting point 13.4&nbsp;°C, specific gravity 0.891. CAS Registry Number 112-80-1.

#### Elaidic acid 
**Elaidic acid** has 18 carbons. Molecular weight 282.46, melting point 43–45&nbsp;°C. CAS Registry Number 112-79-8.

#### Vaccenic acid 
**Vaccenic acid** has 18 carbons. Molecular weight 282.46. CAS Registry Number 506-17-2.

#### Gadoleic acid 
**Gadoleic acid** has 20 carbons. Molecular weight 310.51. CAS Registry Number 29204-02-2.

#### Eicosenoic acid 
**Eicosenoic acid** has 20 carbons. Molecular weight 310.51. CAS Registry Number 5561-99-9.

#### Erucic acid 
**Erucic acid** has 22 carbons. Molecular weight 338.57, melting point 33–35&nbsp;°C. CAS Registry Number 112-86-7.

#### Nervonic acid 
**Nervonic acid** has 24 carbons. Molecular weight 366.62, melting point 42–43&nbsp;°C. CAS Registry Number 506-37-6.

### Di-unsaturated fatty acid 
These fatty acids have two unsaturated bonds.

#### Linoleic acid 
**Linoleic acid** has 18 carbons. Molecular weight 280.45, melting point −5&nbsp;°C, specific gravity 0.902. CAS Registry Number 60-33-3.

#### Eicosadienoic acid 
**Eicosadienoic acid** (eicosadienoic's) has 20 carbons. Molecular weight 308.50.

#### Docosadienoic acid 
**Docosadienoic acid** (docosadienoic's) has 22 carbons. Molecular weight 336.55. CAS Registry Number 7370-49-2.

### Tri-unsaturated fatty acids 
These fatty acids have three unsaturated bonds.

#### Linolenic acid 
**α-Linolenic acid** (alpha-linolenic's) has 18 carbons. Molecular weight 278.43, melting point −11&nbsp;°C, specific gravity 0.914. CAS Registry Number 463-40-1.

**γ-Linolenic acid** (gamma-linolenic's) has 18 carbons. CAS Registry Number 506-26-3.

#### Pinolenic acid 
**Pinolenic acid** (pinolenic's) has 18 carbons. Molecular weight 278.43. CAS Registry Number 16833-54-8.

#### Eleostearic acid 
**α-Eleostearic acid** (alpha-eleostearic's) has 18 carbons. Molecular weight 278.43.

**β-Eleostearic acid** (beta-eleostearic's, beta-eleostearic acid) is an isomer of α-eleostearic acid.

α- and β-Eleostearic acids are *cis–trans* isomers. Other *cis–trans* isomers of eleostearic acid are:

**Catalpic acid** (9*E*, 11*E*, 13*Z*)
**Punicic acid** (9*Z*, 11*E*, 13*Z*).

#### Mead acid 
**Mead acid** (Mead's) has 20 carbons. Molecular weight 306.48. CAS Registry Number 20590-32-3.

#### Dihomo-γ-linolenic acid 
**Dihomo-γ-linolenic acid** (dihomo-gamma-linolenic's, dihomo-gamma-linolenic acid, **DGLA**) has 20 carbons. Molecular weight 306.48. CAS Registry Number 1783-84-2.

#### Eicosatrienoic acid 
**Eicosatrienoic acid** (eicosatrienoic's, eicosatrienoic acid) has 20 carbons. Molecular weight 306.48.

### Tetra-unsaturated fatty acids 
These fatty acids have four unsaturated bonds.

#### Stearidonic acid 
**Stearidonic acid** (stearidonic's) has 18 carbons. Molecular weight 276.41. CAS Registry Number 20290-75-9.

#### Arachidonic acid 
**Arachidonic acid** (arachidonic's) has 20 carbons. Molecular weight 304.47, boiling point 169–171&nbsp;°C. CAS Registry Number 506-32-1.

#### Eicosatetraenoic acid 
**Eicosatetraenoic acid** (eicosatetraenoic's) has 20 carbons. Molecular weight 304.47.

#### Adrenic acid 
**Adrenic acid** (adrenic'sd) has 22 carbons. Molecular weight 332.52. CAS Registry Number 28874-58-0.

### Penta-unsaturated fatty acids 
These fatty acids have five unsaturated bonds.

#### Bosseopentaenoic acid 
**Bosseopentaenoic acid** (Boseopentaen's), has 20 carbons. Molecular weight 302.46 g·mol−1.

#### Eicosapentaenoic acid 
**Eicosapentaenoic acid** (**EPA**) has 20 carbons. Molecular weight 302.45, melting point −54 – −53&nbsp;°C, specific gravity 0.943. CAS Registry Number 10417-94-4.

#### Ozubondo acid 
**Ozubondo acid** (Ozubondo's, Osbond acid), has 22 carbons. Molecular weight 330.50. CAS Registry Number 25182-74-5

#### Sardine acid 
**Sardine acid** (clupanodonic acid) has 22 carbons. Molecular weight 330.50.

#### Tetracosapentaenoic acid 
**Tetracosapentaenoic acid** has 24 carbons. Molecular weight 358.56.

### Hexa-unsaturated fatty acids 
The following fatty acids have six unsaturated bonds.

#### Cervonic acid 
**Cervonic acid (or docosahexaenoic acid)** has 22 carbons. Molecular weight 328.49, melting point −44&nbsp;°C, specific gravity 0.950. CAS Registry Number 6217-54-5.

#### Herring acid 
**Herring acid** (Herring's, Nisinic acid) is a 6,9,12,15,18,21-hexa unsaturated fatty acid. It has 24 carbon atoms. Molecular weight 356.54.

## Related pages
*List of saturated fatty acids
*Carboxylic acid
*Dicarboxylic acid

## References