The molecule is a dicarboxylic acid monoester that resulting from the formal condensation of one of the carboxy groups of terephthalic acid with one of the hydroxy groups of ethylene glycol. It derives from a terephthalic acid and an ethylene glycol. It is a conjugate acid of a 4-[(2-hydroxyethoxy)carbonyl]benzoate.
4-(2-hydroxyethoxycarbonyl)benzoic acid