L-serine(2S)-2-amino-3-hydroxypropanoic acid(S)-(-)-serine(S)-2-amino-3-hydroxypropanoic acid(S)-alpha-Amino-beta-hydroxypropionic acid(S)-serineL-(-)-serineL-2-Amino-3-hydroxypropionic acidL-3-Hydroxy-2-aminopropionic acidL-3-Hydroxy-alanineL-SerL-SerinL-SerineSSERINESerSerinebeta-Hydroxy-L-alaninebeta-Hydroxyalanine