(2S)-2-[[(2S)-2-azaniumyl-3-hydroxypropanoyl]amino]-3-methylbutanoate (2S)-2-[[(2S)-2-azaniumyl-3-hydroxy-propanoyl]amino]-3-methyl-butanoate (2S)-2-[[(2S)-2-ammonio-3-hydroxy-1-oxopropyl]amino]-3-methylbutanoate (2S)-2-[[(2S)-2-ammonio-3-hydroxy-propanoyl]amino]-3-methyl-butyrate ZINC02561110