Dicarboxylic acids derivatives are chemical compounds that are derived from dicarboxylic acids, which contain two carboxyl (-COOH) groups. These derivatives can include esters, amides, and anhydrides, formed through various chemical reactions. They are important in organic chemistry and are used in the production of polymers, pharmaceuticals, and other industrial chemicals. These derivatives exhibit unique properties and reactivity due to the presence of two carboxyl groups. For example, they can participate in condensation reactions, leading to the formation of larger molecules. Common dicarboxylic acids include oxalic acid, succinic acid, and adipic acid, each serving as a precursor for various derivatives.