saturated fatty acid anion fatty acid anion 8:0 [O-]C([*])=O C8H15O2 143.10720 143.20350 -1 CHEBI:78117 Any saturated fatty acid anion containing 8 carbons. Formed by deprotonation of the carboxylic acid moiety. Major species at pH 7.3. fatty acid 8:0 chebi_ontology