Octadecadienoic Acid n-3

**Semantic type:** Organic Chemical

**Definition:** A polyunsaturated long-chain fatty acid with an 18-carbon backbone and double bonds originating from the 3rd position and either the 6th or 7th position from the methyl end. There are at least 2 isomers that can be called by this name.

**Synonyms:** - Fatty Acid 18:2 n-3