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A	B	C	D	E	F
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D-(-)-Arginine hydrochloride

L-Arginine-L-pyroglutamate

L-Arginine alpha-ketoglutarate

DL-Arginine hydrochloride monohydrate

L(+)-Arginine hydrochloride

L-Arginine hydrochloride

L-Arginine L-glutamate