In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Robust quantitative SERS analysis with Relative Raman scattering intensities, published in 2021-01-01, which mentions a compound: 4556-23-4, Name is Pyridine-4-thiol, Molecular C5H5NS, Electric Literature of C5H5NS.
Robust quant. anal. methods are very attractive but challenging with surface-enhanced Raman scattering (SERS) technique till now. Quant. anal. methods using absolute Raman scattering intensities tend to desire very critical reproducibility of SERS substrates and consistency of testing conditions, as batch differences and inhomogeneity of SERS substrates as well as the fluctuation of measuring parameters placed challenging obstacles. Relative Raman scattering intensities, however, can release the adverse interferences mentioned above and provide effective and robust information as it is independent of the reproducibility of SERS substrates. By establishing external calibration working curves, the authors achieved accurate mol. composition prediction of mols. in multi-component systems. Further, by choosing or adding a label mol. with known concentration as Raman internal standards, the concentration of target mols. can be easily predicted. This approach proved the effectiveness and robustness of quant. anal. with the relative Raman scattering intensities, even carried out with a flexible inhomogeneous SERS substrate.
This compound(Pyridine-4-thiol)Electric Literature of C5H5NS was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.
Reference:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts