R4257


N<sup>ω</sup>-hydroxy-L-arginine
Nω-hydroxy-L-arginine
H<sub>2</sub>O
H2O
guanidinium
guanidinium
H<SUP>+</SUP>
H+
(<i>S</i>)-1-pyrroline-5-carboxylate
(S)-1-pyrroline-5-carboxylate