is conjugate acid of alkylamine alkylaminium 17.02655 CHEBI:66885 alkylaminium cation [NH3+][*] 17.031 MetaCyc:Alkylamines alkylaminium(1+) +1 alkylamine cation chebi_ontology an alkylamine CHEBI:17664 PMID:9989229 H3NR A primary ammonium ion obtained by protonation of the amino goup of any alkylamine; major species at pH 7.3. primary ammonium ion