. "C6H15N4O2"^^ . "The L-enantiomer of argininium(1+)."^^ . . . . . . . "L-argininium(1+)"^^ . "L-argininium"^^ . "L-arginine monocation"^^ . "(2S)-2-ammonio-5-guanidiniopentanoate"^^ . "L-arginine"^^ . "175.209"^^ . "L-argininium(1+)"^^ . .