(2S)-2-amino-5-oxopentanoic acid (2S)-2-amino-5-oxo-pentanoic acid (2S)-2-amino-5-keto-valeric acid 496-92-4 Glutamic acid gamma-semialdehyde 5-oxo-L-norvaline CHEBI:17232 L-glutamic 5-semialdehyde gamma-Glutamyl semialdehyde L-glutamate gamma-semialdehyde C01165 L-Glutamate 5-semialdehyde 2-Amino-5-oxopentanoic acid Glutamate gamma-semialdehyde 4-CARBOXY-4-AMINOBUTANAL CAB