Carboxylic acids constitute a fundamental class of organic compounds defined by the presence of a carboxyl functional group ($\text{-COOH}$). This group comprises a carbonyl moiety ($\text{C=O}$) bonded to a hydroxyl group ($\text{-OH}$), resulting in an acidic nature capable of donating protons. Chemically, these compounds exhibit significant acidity, and the strength of this acidity is modulated by electronic effects within the molecule. In biology, carboxylic acids are crucial metabolic intermediates, serving as structural components and precursors for various biomolecules, including fatty acids and amino acids. Their ability to undergo reactions such as esterification and amide formation makes them indispensable in biochemical pathways, driving processes ranging from energy storage to complex macromolecule synthesis.