The molecule is a peptide cation that is the conjugate acid of beta-alanyl-L-arginine, arising from the deprotonation of the carboxy group and protonation of both the primary amino and guanidino groups; major species at pH 7.3. It is a conjugate acid of a beta-alanyl-L-arginine.
(2S)-2-(3-azaniumylpropanoylamino)-5-(diaminomethylideneazaniumyl)pentanoate