Pyrrole definition

A colorless, pungent, slightly basic liquid, C₄H₅N, found in bile pigments, chlorophyll, and hematin, and obtained from coal tar, bone oil, etc.

A five-membered heterocyclic ring compound, C₄ H₅ N, having an odor similar to chloroform, that is the parent compound of protoporphyrin.

A five-membered heterocyclic ring compound, C₄ H₅ N, having an odor similar to chloroform, that is the parent compound of protoporphyrin.

Any of various derivatives of this compound.

Any of a class of organic compounds having a five-member ring composed of four carbon atoms and one nitrogen atom. The pyrrole ring structure is a component of many biologically important compounds, including porphyrins, alkaloids, and certain amino acids.

The simplest of this class of compounds, in which a single hydrogen atom is attached to each atom in the ring. It has a pleasant odor similar to that of chloroform. Chemical formula: C₄H₅N.