Kibardina, Ludmila K. et al. published their research in Synthesis in 2015 | CAS: 65-22-5

3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride (cas: 65-22-5) belongs to alcohols. The oxygen atom of the strongly polarized O―H bond of an alcohol pulls electron density away from the hydrogen atom. This polarized hydrogen, which bears a partial positive charge, can form a hydrogen bond with a pair of nonbonding electrons on another oxygen atom. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Name: 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride

Reaction of Pyridoxal with Phenols: Synthesis of Novel 1-Aryl-Substituted Furopyridines was written by Kibardina, Ludmila K.;Chumakova, Ludmila V.;Gazizov, Almir S.;Burilov, Alexander R.;Pudovik, Michail A.. And the article was included in Synthesis in 2015.Name: 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride The following contents are mentioned in the article:

A new method based on the acid-catalyzed reaction of pyridoxal with polyfunctional phenols was developed for the synthesis of potentially biol. active 1-aryl-6-methyl-1,3-dihydrofuro[3,4-c]pyridin-7-ols. Advantages of this method include a good yield of the target furopyridines and the use of readily available hydrochloric acid as a catalyst. The possibility of extending the proposed approach to nucleophiles other than phenols was demonstrated by the synthesis of the known biol. active compound 1-(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-6-methyl-1,3-dihydrofuro[3,4-c]pyridin-7-ol hydrochloride (TM2002). This study involved multiple reactions and reactants, such as 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride (cas: 65-22-5Name: 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride).

3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride (cas: 65-22-5) belongs to alcohols. The oxygen atom of the strongly polarized O―H bond of an alcohol pulls electron density away from the hydrogen atom. This polarized hydrogen, which bears a partial positive charge, can form a hydrogen bond with a pair of nonbonding electrons on another oxygen atom. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Name: 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts