Synonyms: H-L-Arg-OH.HCl, (S)-2-Amino-5-guanidinopentanoic acid hydrochloride, (S)-(+)-Arginine HCl, H-Arg-OH·HCl, L-Arginine, hydrochloride, (S)-(+)-Arginine hydrochloride, H-Arg-OH.HCl, L-Arg, L(+)-Arginine monohydrochloride, L(+)-Arginine hydrochloride