Chemistry is traditionally divided into organic and inorganic chemistry. Safety of H-D-Pro-OH. The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 344-25-2
The compounds [TpReO(eta2-N-X)] (X = N, O; Tp = hydrotrispyrazolylborate) were prepared from TpReOCl2 and chiral, bidentate ligands in which eta2-N-X = the alcoholates or amidates derived from (1S,2R)-ephedrine, (1S,2S)-diphenylethylenediamine, and L-proline. The three complexes have been fully characterized by 1H NMR, IR, circular-dichroism, elemental analysis, polarimetry, and X-ray crystallography. All have a chiral center at rhenium. The complexes derived from (1S,2R)-ephedrine and L-proline were formed diastereoselectively as a single diastereomer. All of the complexes exhibited similar Re-O bond distances, ranging from 1.687(7) to 1.707(7) angstroms, consistent with distances found in other Re(V) oxo complexes. The electronic asymmetry at the metal caused by the different donor properties of the ligands leads to tilting of the Re-oxo bond relative to the plane of the equatorial ligands. The compounds were found to be robust and resisted oxo transfer even when subjected to harsh conditions.
Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.Safety of H-D-Pro-OH, you can also check out more blogs about344-25-2
Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI