C5H4N4

C5H4N4 is a chemical formula representing a compound, most likely an organic compound. Without further context or systematic naming conventions applied, it is difficult to definitively identify the specific molecule or molecules that this formula represents. The formula indicates that the compound is composed of five carbon atoms, four hydrogen atoms, and four nitrogen atoms.

Given the presence of multiple nitrogen atoms, the compound might be a heterocycle, meaning it contains a ring structure with atoms other than carbon (in this case, nitrogen) in the ring. It could also be a polyazole, a class of heterocyclic compounds containing multiple nitrogen atoms in a five-membered ring.

Due to the simple formula, several isomeric structures are possible. Isomers are molecules with the same molecular formula but different arrangements of atoms, leading to different physical and chemical properties. To fully identify the compound represented by C5H4N4, additional information such as its structure, name (following IUPAC nomenclature), synthesis, properties, and applications would be required. Without this information, C5H4N4 simply indicates a molecular composition.