secondary ammonium ion morpholinium PMID:32272314 MetaCyc:MORPHOLINE C4H10NO InChI=1S/C4H9NO/c1-3-6-4-2-5-1/h5H,1-4H2/p+1 CHEBI:167868 C1COCC[NH2+]1 PMID:26744296 PMID:19586072 chebi_ontology YNAVUWVOSKDBBP-UHFFFAOYSA-O PMID:28707619 +1 PMID:28407378 PMID:25681783 morpholin-4-ium 88.129 A secondary ammonium ion that is the conjugate acid of morpholine resulting from the protonation of the NH group. Major microspecies at pH 7.3. Chemspider:4199185 88.07569 PMID:26099357 PMID:32149213 morpholine