(2S)-2-aminohexanoic acid 327-57-1 C01933 L-2-Aminohexanoate L-2-Aminohexanoic acid L-Aminohexanoate L-Aminohexanoic acid L-Norleucine NLE 2S-amino-hexanoic acid LMFA01100042 (S)-()-2-Aminohexanoic acid (S)-2-Aminocaproic acid N8513_SIGMA N6877_SIGMA CHEBI:18347 L(+)-norleucine (S)-2-Aminohexanoic acid (2S)-2-azaniumylhexanoate (2S)-2-ammoniohexanoate ZINC01529322