L-Threonine

L-enantiomer? of Threonine. An essential amino acid for human development, last of the common amino acids to be discovered. Identified in oat protein. Synonyms: (S)-Threonine, H-Thr-OH, 2-Amino-3-hydroxybutyric Acid, ?L-(-)-Threonine, NSC 16589, NSC 46701, Threonin, Threonine, [R-(R*,S*)]-2-Amino-3-hydroxybutanoic Acid, CAS Number: 72-19-5, Molecular Formula: C?H?NO?, Molecular Weight: 119.12, Form: White crystalline powder, Purity: >99%, Solubility (1%): Colorless, clear, complete, pH: 5.0-6.5, Specific Rotation @ C=6, H2O: -27.6° to -29.0°, Heavy Metals (Pb): <0.001%, Loss on Drying: <0.2%, Residue on Ignition: <0.10%, Sulfate: <0.02%, Chloride: <0.02%, Iron: <0.001%, Endotoxin: <1EU/mg