The molecule is an amino acid zwitterion obtained from N(omega),N'(omega)-dimethyl-L-arginine by transfer of a proton from the carboxylic acid group to the alpha-amino group. It is a tautomer of a N(omega),N'(omega)-dimethyl-L-arginine.
(2S)-2-azaniumyl-5-[(N,N'-dimethylcarbamimidoyl)amino]pentanoate