D(-)-allo-Threonine
- CAS NO.：24830-94-2
- Empirical Formula: C4H9NO3
- Molecular Weight: 119.12
- MDL number: MFCD00004526
- EINECS: 246-488-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-05-18 11:31:08
What is D(-)-allo-Threonine?
Chemical properties
white crystalline powder
The Uses of D(-)-allo-Threonine
They are found as constituents of an increasing group of biologically active peptides. Stereocontrolled syntheses of chiral and racemic key intermediates to thienamycin from d-allo-threonine and trans-crotonic acid.
Definition
ChEBI: D-allothreonine is the D-enantiomer of allothreonine. It occurs as a component of peptido-lipids in certain bacteria. It has a role as a bacterial metabolite. It is an allothreonine and a D-alpha-amino acid. It is an enantiomer of a L-allothreonine. It is a tautomer of a D-allothreonine zwitterion.
Purification Methods
Recrystallise D-allothreonine from aqueous EtOH or 50% EtOH. [Elliot J Chem Soc 62 1950, Birnbaum et al. J Biol Chem 194 455 1952, IR: Greenstein & Winitz The Chemistry of the Amino Acids J. Wiley, Vol 3 1961, Beilstein 4 IV 3170.]
Properties of D(-)-allo-Threonine
| Melting point: | 276 °C (dec.)(lit.) |
| Boiling point: | 222.38°C (rough estimate) |
| alpha | -33.5 º (c=1, 1N HCl 24 ºC) |
| Density | 1.3126 (rough estimate) |
| refractive index | -10 ° (C=5, H2O) |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| solubility | Water (Slightly) |
| form | Solid |
| pka | 2.19±0.10(Predicted) |
| color | White to Off-White |
| Water Solubility | soluble |
| BRN | 1721644 |
| CAS DataBase Reference | 24830-94-2(CAS DataBase Reference) |
| NIST Chemistry Reference | D-allothreonine(24830-94-2) |
Safety information for D(-)-allo-Threonine
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for D(-)-allo-Threonine
| InChIKey | AYFVYJQAPQTCCC-PWNYCUMCSA-N |
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