The Absolute Best Science Experiment for 499-40-1

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Synthetic Route of 499-40-1. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 499-40-1, Name is (2R,3S,4R,5R)-2,3,4,5-Tetrahydroxy-6-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexanal

Nuclear Magnetic Resonance Studies on the Structure of Ruthenium(II) Complexes of Di-2-pyridylamine in DMSO Solution

The complete assignments of the 1H and 13C NMR spectra of 2+ (n=0-2) have been carried out on the basis of proton-proton coupling constants, H-H COSY, C-H COSY, and the aromatic ring-current effects of the ligand.The observed aromatic ring-current shifts of the assigned 1H NMR signals were compared with the calculated ones by using a current-loop model.The flapping of the Hdpa ligands showed that the structures of 2+, 2+, and 2+ in solution have apparent C2, C2, and D3 symmetries, respectively.

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Reference：
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics