The molecule is an iminium ion obtained by protonation of the imino group of 2-methyl-1-pyrroline. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is a conjugate acid of a 2-methyl-1-pyrroline.
5-methyl-3,4-dihydro-2H-pyrrol-1-ium