(2S)-2-azaniumyl-5-[[(2S)-1-oxido-1-oxopropan-2-yl]amino]-5-oxopentanoate (2S)-2-azaniumyl-5-[[(1S)-1-methyl-2-oxido-2-oxo-ethyl]amino]-5-oxo-pentanoate (2S)-2-ammonio-5-[[(1S)-1-methyl-2-oxido-2-oxoethyl]amino]-5-oxopentanoate (2S)-2-ammonio-5-keto-5-[[(1S)-2-keto-1-methyl-2-oxido-ethyl]amino]valerate (2S)-2-azaniumyl-5-[[(2S)-1-oxido-1-oxo-propan-2-yl]amino]-5-oxo-pentanoate ZINC02384790