homopiperazinium
galantaminium
isoquinolinium
piperazinium
anilinium
pyrrolidinium
propylammonium
onium
guanidium
picolinium
toluidinium
benzamidinium
aminium
amidinium
cinchoninium
hydrazinium
episulfonium
quinolinium
sulfcatalase
piperidinium
phenazinium
isothiazolidinium
phenylhydrazinium
arenium ion
aziridinium
isocatechin
uronium
nitrilium
protonation
butylammonium
phenanthridinium
dimethylammonium
ethynium
carboxylation
stibonium
amidiniumation
dialkylammonium
amidium ion
histidinium
pyridinium
selenonium
aminium ion
carboxyl methyltransferase
monocation
azolium
imidazolinium
lyonium
polyuridine
chelatase
cationophore