Thiadiazoles are heterocyclic compounds containing a five-membered ring with two nitrogen atoms and two sulfur atoms, which have been used in the development of pharmaceuticals and agrochemicals due to their wide range of biological activities.

Semicarbazides are chemical compounds used in organic synthesis, with the formula NH2NHCO-NH-R, where R is a generic term for an organic radical, that function as carbonyl reagents, reacting with aldehydes and ketones to form semicarbazones, which have applications in pharmaceuticals, diagnostics, and research.

Composés contenant du phosphore inorganique comme partie intégrante de la molécule.

Bague composés avoir atomes de carbone de leur noyau. (Grant & Hackh est Chemical Dictionary, 5ème e)