Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Dyes and Pigments called Comparative photodynamic inactivation of bioluminescent E. coli by pyridinium and inverted pyridinium chlorins, Author is Calmeiro, Joana M. D.; Dias, Cristina J.; Ramos, Catarina I. V.; Almeida, Adelaide; Tome, Joao P. C.; Faustino, Maria A. F.; Lourenco, Leandro M. O., which mentions a compound: 4556-23-4, SMILESS is SC1=CC=NC=C1, Molecular C5H5NS, Related Products of 4556-23-4.
Photodynamic inactivation (PDI) is a therapeutic approach in study due to the ability to reduce or completely eliminate the bacterial strains without the development of resistance mechanisms. In this therapeutic methodol. the cationic chlorins (Chls) with pyridinium or inverted pyridinium moieties are one of the photosensitizers exploited in our biol. approaches. In this context, we synthesized and characterized new free-base and zinc(II) complexes of pyridinium or inverted pyridinium Chl derivatives (1b, 2, 2a and 2b, resp.) for the inactivation of Escherichia coli (E. coli). The PDI assay was performed with white light irradiation delivered at a fluence rate of 25 mW cm-2. The obtained results of this study demonstrate high PDI efficiency of the zinc(II) metalated Chl 1b, reaching the detection limit of the bioluminescent method (5.2 log reduction) in 45 min of irradiation
In addition to the literature in the link below, there is a lot of literature about this compound(Pyridine-4-thiol)Related Products of 4556-23-4, illustrating the importance and wide applicability of this compound(4556-23-4).
Reference:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts