Kibardina, Lyudmila K. et al. published their research in Heteroatom Chemistry in 2016 | CAS: 65-22-5

3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride (cas: 65-22-5) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Related Products of 65-22-5

Reaction of Pyridoxal with Hydrophosphoryl Compounds was written by Kibardina, Lyudmila K.;Trifonov, Alexey V.;Dobrynin, Alexey B.;Pudovik, Michael A.;Burilov, Alexander R.;Sinyashin, Oleg G.. And the article was included in Heteroatom Chemistry in 2016.Related Products of 65-22-5 The following contents are mentioned in the article:

The products of carbonyl phosphonylation of pyridoxal with dialkylphosphinous acid, alkylphosphinic acid Et esters, and phosphorous acid dialkyl (or diphenyl) esters have been obtained for the first time. In some cases, the products of addition are hydrolytically unstable and stabilized by forming internal betaine structures. The reaction of pyridoxal with phosphorous acid in alc. solutions gives alkoxyfuropyridines possessing the iminium nitrogen atom. The structure and composition of the prepared compounds have been established by 31P and 1H NMR spectroscopy, mass spectrometry (MALDI-TOF), and X-ray anal. This study involved multiple reactions and reactants, such as 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride (cas: 65-22-5Related Products of 65-22-5).

3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride (cas: 65-22-5) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Related Products of 65-22-5

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts