Pyrrole is a heterocyclic, aromatic, organic compound, a five-membered ring with the formula C4H4NH. It is a colorless volatile liquid that darkens readily upon exposure to air. Substituted derivative

A heterocyclic compound or ring structure is a hydrocarbon-based cyclic compound that contains at least one heteroatom as member of its ring. Heterocyclic organic chemistry is the branch of organic ch