Deuterated compounds are used in a wide range of applications. These include pharmacokinetic studies, trace-level quantification of pesticide residues in food and endocrine-disrupting substances in the environment, higher-order structural analysis of proteins and peptides, and as functional materials such as those used in optical fibers. In recent years, demand has grown further as the deuterium isotope effect has enabled improved stability and durability in pharmaceuticals and in light-emitting materials for organic EL devices. This advantage arises from the fact that C-D bonds have higher bond-dissociation energies than C-H bonds and are more resistant to cleavage. Interest is also growing in deuterated compounds for neutron diffraction applications. With new applications emerging, deuterated compounds remain a fascinating class of compounds with significant future potential. FUJIFILM Wako offers a selection of deuterated compounds. A custom synthesis service is also available for customers seeking deuteration of specific compounds. This technology was developed in-house, and a wide range of deuterated compounds can be supplied at low cost and in large quantities through hydrogen-deuterium exchange reactions.