Results from gas chromatograms of normal, partially deuterated, and perdeuterated additional odorants used herein. The percentage (Area %) of the total that constitutes the main species within each preparation is shown in bold. For acetophenone isotopologues, the purity of all preparations was >99.7%. The contribution of all contaminants was negligible as it ranged below 0.1%. Both ethanol isotopologues are 100% pure. For pentanol, the normal odorant was nearly pure (99.9%), while the deuterated isotopologue was highly pure at 99.5%, with two main, albeit low-level, contaminants: peak 1 at 0.16% and peak 2 at 0.33%. For octanol, the normal isotopologue was highly pure (99.4%), while the deuterated isotopologue is equally pure (99.5%). Although greater in number, the contribution of contaminants in the deuterated isotopologue is minor, except for the peak at 5.692 contributing 0.26% to the total. This peak is shared with the normal isotopologue at 5.607 and contributes 11% of the total while the major contaminating peak at 8.821 contributes 0.36%.