Hypochlorite-mediated oxidation of each of these compounds converted the aldehyde functional group into the corresponding carboxylic acids, Hydrate Formation of Aldehydes. In previous work, we demonstrated the propensity of terpene oxidation products containing aldehyde groups to exist in equilibrium with their hydrate form when in aqueous environments. Here, we used 1 H NMR spectroscopy to monitor solutions of compounds 7, 14, and 15 suspended in D2O with and without 100 mM ammonium sulfate. All three compounds were sparingly soluble, but we did observe hydrate formation at an approximately 1:1.2 ratio of aldehyde to hydrate after 10 minutes for both compounds 14 and 15, which was unchanged when measured again after 24 hours. The addition of ammonium sulfate had no effect on the aldehyde:hydrate ratio. Due to low solubility, the signal to noise ratio was too poor for compound 7 to quantify the exchange ratio, but we can safely assume it behaves similarly to the dimers measured here and its monomer precursor pinonaldehyde, measured in our previous study. Likewise, we assume hydrate formation for the diastereomeric series follows the same trends.