Term Name:	carboxynorspermidine(2+)
Synonyms:	(2S)-2-ammonio-4-[(3-ammoniopropyl)ammonio]butanoate, (2S)-2-azaniumyl-4-[(3-azaniumylpropyl)azaniumyl]butanoate, carboxynorspermidine
Definition:	The α-amino-acid cation formed from carboxynorspermidine by zwitterion formation between the carboxy and α-amino groups and protonation of the nitrogen atoms at positions 5 and 9; the major structure of carboxynorspermidine at pH 7.3.
Ontology:	ChEBI [CHEBI:65070]  ( EBI )