(2S)-2-[[(2S)-2-azaniumyl-3-hydroxypropanoyl]amino]-3-hydroxypropanoate (2S)-2-[[(2S)-2-azaniumyl-3-hydroxy-propanoyl]amino]-3-hydroxy-propanoate (2S)-2-[[(2S)-2-ammonio-3-hydroxy-1-oxopropyl]amino]-3-hydroxypropanoate (2S)-2-[[(2S)-2-ammonio-3-hydroxy-propanoyl]amino]-3-hydroxy-propionate ZINC02556659