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A	B	C	D	E	F
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D-2-Aminobutyric acid

L(+)-2-Aminobutyric acid

4-Aminobutyric acid

DL-3-Aminobutyric acid

N-(4-Aminobutyl)-N-ethylisoluminol

DL-2-Amino-1-butanol

4-Amino-1-butanol

4-Aminobutanoic acid

(R)-(-)-2-Aminobutane

L-2-Aminobutanamide hydrochloride

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