Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Picolinamide, is researched, Molecular C6H6N2O, CAS is 1452-77-3, about Screening a trace amount of pharmaceutical cocrystals by using an enhanced nano-spot method.HPLC of Formula: 1452-77-3.
Cocrystn. is an attractive and promising technol. that can improve the phys. properties of formulations of active pharmaceutical ingredients (APIs). We have developed a “”nano-spot method”” that can evaluate the crystalline form on the nanogram scale. In this study, the following studies were performed to obtain versatile and comprehensive improvements to the nano-spot method: modification of the sample solution, application of solvent vapor exposure to attempt the precipitation of various states of crystals, and adoption of low-frequency Raman spectroscopy. Carbamazepine was used as a model API and cocrystn. screening was examined with 12 cocrystal formers (coformers). In the case of combinations that are already known to form cocrystals, spectra similar to those of previously reported cocrystals or new spectra were obtained. It was considered that the reported cocrystals or new polymorphs were obtained. In contrast, in the case of the combination which has been reported not to form a cocrystal, the spectra were consistent with that for the phys. mixture of API and coformer, suggesting that a cocrystal also did not form in this screening. In addition, the newly adopted low-frequency Raman spectroscopy enabled the high-sensitive detection of the crystalline form.
There is still a lot of research devoted to this compound(SMILES：O=C(N)C1=NC=CC=C1)HPLC of Formula: 1452-77-3, and with the development of science, more effects of this compound(1452-77-3) can be discovered.
Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem