SEARCH Articles Figures Tables 18<). isotopic labelling with Biotransformations in the Preparation of Compounds Labeled with Carbon and Hydrogen Isotopes Hydrogen isotopes Hydrogen, isotopes sugars specifically labeled with Hydrogenation labeled Isotope isotopic labeling Isotope label Isotope-labelled Isotopic hydrogen Isotopic labeling Isotopic labeling with Isotopic labelled Isotopic labelling Isotopic labels Isotopical labeling Labeled with isotopes of hydrogen Labeling with Labelled with Labelled with isotopic Specifically labeled with isotopes hydrogen Sugars Specifically Labeled with Isotopes of Hydrogen