Columbinic Acid

**Semantic type:** Organic Chemical

**Definition:** A polyunsaturated long-chain fatty acid with an 18-carbon backbone and exactly three double bonds, originating from the 6th, 9th and 13th positions from the methyl end.

**Synonyms:** - Fatty Acid 18:3 n-6 cis, cis, trans - Trans,cis,cis-octadeca-5,9,12-trienoic acid - Trans-5, 9, 12-Octadecatirenoic Acid