The molecule is an ammonium ion resulting from the protonation of the pyrrolidine nitrogen of tripoloidine. It is the major species at pH 7.3. It has a role as a H1-receptor antagonist. It is a conjugate acid of a triprolidine.
2-[(E)-1-(4-methylphenyl)-3-pyrrolidin-1-ium-1-ylprop-1-enyl]pyridine