1,4-Butanediol Terephthalate Dibenzyl Ester is a reactant in the preparation of semiflexible liquid-crystalline polyesters with aromatic triad mesogens. 1,4-Butanediol Terephthalate Dibenzyl Ester is also an intermediate formed in the synthesis of Cyclotris(1,4-butylene Terephthalate) (C988975), a cyclic trimer of poly(butylene terephthalate), a thermoplastic engineering polymer.