The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Pyridoxine chemistry. IV. Proton magnetic resonance spectra of compounds in the vitamin B6 group》. Authors are Korytnyk, W.; Singh, R. P..The article about the compound:5-(hydroxymethyl)-2,4-dimethylpyridin-3-ol hydrochloridecas:148-51-6,SMILESS:OC1=C(C)C(CO)=CN=C1C.[H]Cl).Application of 148-51-6. Through the article, more information about this compound (cas:148-51-6) is conveyed.
cf. CA 58, 5622h. The proton magnetic resonance (p.m.r.) spectra of compounds in the vitamin B6 group have been determined in D2O solution, and the proton peaks have been assigned on the basis of comparison with several analogs of pyridoxol (I). Considerable changes in p.m.r. spectra have been observed in acid, neutral, and alk. solutions and have been rationalized on the basis of the electronic properties of the various ionic forms. A facile base-catalyzed deuterium exchange has been observed in I derivatives in which the heterocyclic N is quaternized. The nature of the aldehyde group in pyridoxal and in pyridoxal phosphate has been elucidated.
From this literature《Pyridoxine chemistry. IV. Proton magnetic resonance spectra of compounds in the vitamin B6 group》,we know some information about this compound(148-51-6)Application of 148-51-6, but this is not all information, there are many literatures related to this compound(148-51-6).
Reference:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia