Low-field nuclear magnetic resonance (NMR) spectra were recorded on a Magritek SpinSolve 80 Carbon ( 1 H basic frequency of 80.478 MHz) with a 5 mm H-C-F probe with z-gradients. All samples were dissolved in D2O or DMSO-d6. Prior to data acquisition, the magnetic field was locked using an external F lock substance and shimmed on the major 1 H signal of each sample to ensure sufficient homogeneity. Data were recorded at 26.5 °C using Magritek SpinSolve 2.3.8 and processed and analyzed using Bruker TopSpin 4.3.0 after conversion of the dataset. Quantification of compounds in the digested MOF samples and calibration curves was performed using maleic acid (MA, 2H) as the internal standard. The δ-values are expressed in parts per million (ppm). The following acronyms were used: s (singlet), d (doublet), t (triplet), q (quartet), and m (multiplet). The prefix "app." denotes the apparent multiplicity of a signal, indicating the general shape and form of the multiplet in the spectrum, even though this is not theoretically expected based on the molecular structure of the compound and/or some higher order fine structure could be observed.