Synthesis of [4<i>S</i>‐<sup>2</sup>H]NADH, [4<i>R</i>‐<sup>2</sup>H]NADH, [4‐<sup>2</sup>H<sub>2</sub>]NADH and [4‐<sup>2</sup>H]NAD<sup>+</sup> cofactors through heterogeneous biocatalysis in heavy water
Journal of labelled compounds & radiopharmaceuticals