In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Lamotrigine: Design and synthesis of new multicomponent solid forms, published in 2019-03-01, which mentions a compound: 1452-77-3, mainly applied to lamotrigine multicomponent solid forms; Co-crystals and salts; Diflunisal; Lamotrigine; Pyridinecarboxamides; Stability assay; Xanthines, Synthetic Route of C6H6N2O.
In this work, a crystal engineering and thermodn. based approach has been used aiming at contributing to a deeper knowledge of lamotrigine multicomponent solid forms. Two types of co-mols. have been chosen that can give rise to co-crystals with lamotrigine through different supramol. heterosynthons: the xanthines, theophylline and caffeine, and the three isomeric pyridinecarboxamides. Association with diflunisal, which may result in a salt, was also investigated. Mechanochem., differential scanning calorimetry, thermogravimetry, X-ray powder and single crystal diffraction, IR spectroscopy were the methods used. For all the systems, exploratory neat mechanochem. experiments, carried out on lamotrigine + co-mol. binary mixtures of different compositions, were not successful in promoting association From differential scanning calorimetry data and the binary solid-liquid phase diagrams, co-crystals/salts were identified as well as their resp. stoichiometry, and a methodol. of synthesis was established. For pyridinecarboxamides, mol. recognition is dependent on the position of the amide group in the pyridine ring: co-crystallization did not occur with picolinamide co-former. Both xanthines form co-crystals with lamotrigine, (1:1) with theophylline and (2:1) lamotrigine:caffeine. Addnl., the crystalline structure of a lamotrigine:theophylline 1:1 monohydrate was solved. The (1:1) lamotrigine:theophylline co-crystal converts to this monohydrate in accelerated stability tests. A (1:1) lamotrigine:diflunisal salt was identified, which proved to be stable in accelerated stability assays.
Although many compounds look similar to this compound(1452-77-3)Synthetic Route of C6H6N2O, numerous studies have shown that this compound(SMILES:O=C(N)C1=NC=CC=C1), has unique advantages. If you want to know more about similar compounds, you can read my other articles.
Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem