(-)-Serine -13C3,15N; (S)-2-Amino-3-hydroxypropanoic Acid -13C3,15N; (S)-Serine -13C3,15N; (S)-α-Amino-β-hydroxypropionic Acid -13C3,15N; 1: PN: US20090069547 PAGE: 10 claimed protein -13C3,15N; 225: PN: EP2071334 SEQID: 242 claimed protein -13C3,15N; 225: PN: WO2009077864 SEQID: 242 claimed protein -13C3,15N; 6: PN: WO2012061268 SEQID: 6 claimed protein-13C3,15N; L-(-)-Serine-13C3,15N; L-3-Hydroxy-2-aminopropionic Acid -13C3,15N; 3-Hydroxy-L-alanine -13C3,15N; L-Ser; Serine -13C3,15N; β-Hydroxy-L-alanine -13C3,15N

Isotope labelled L-Serine is used in the synthesis of purines and pyrimidines as antibacterial/antifungal agents, as well as acting as a proteinogenic compound.