An alpha,omega-dicarboxylic acid that is a linear five-carbon dicarboxylic acid. ChEBI: Glutaric acid is an alpha,omega-dicarboxylic acid that is a linear five-carbon dicarboxylic acid. It has a role as a human metabolite and a Daphnia magna metabolite. It is an alpha,omega-dicarboxylic acid and a dicarboxylic fatty acid. It is a conjugate acid of a glutarate(1-) and a glutarate.