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HomeProduct name listL(+)-allo-Threonine

L(+)-allo-Threonine

Synonym(s):(2S,3S)-2-Amino-3-hydroxybutyric acid

  • CAS NO.:28954-12-3
  • Empirical Formula: C4H9NO3
  • Molecular Weight: 119.12
  • MDL number: MFCD00064268
  • EINECS: 249-327-2
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-11-19 23:02:33
L(+)-allo-Threonine Structural

What is L(+)-allo-Threonine?

Chemical properties

white to off-white crystalline powder

The Uses of L(+)-allo-Threonine

L-allo-Threonine is a reactant used in the synthesis of an antibiotic, globomycin, and its congener, SF-1902 A5.

Definition

ChEBI: L-allothreonine is the L-enantiomer of allothreonine. It has a role as an Escherichia coli metabolite and a Saccharomyces cerevisiae metabolite. It is an allothreonine and a L-alpha-amino acid. It is an enantiomer of a D-allothreonine. It is a tautomer of a L-allothreonine zwitterion.

Properties of L(+)-allo-Threonine

Melting point: 272 °C (dec.)(lit.)
Boiling point: 222.38°C (rough estimate)
alpha  9 º (c=2, H2O)
Density  1.3126 (rough estimate)
refractive index  10 ° (C=5, H2O)
storage temp.  Keep in dark place,Sealed in dry,Room Temperature
solubility  Water (Slightly)
form  Crystalline Powder
pka pK1: 2.108(+1);pK2: 9.096(0) (25°C)
color  White to off-white
optical activity [α]23/D +9.0°, c = 2 in H2O
BRN  1721645
CAS DataBase Reference 28954-12-3(CAS DataBase Reference)

Safety information for L(+)-allo-Threonine

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
Precautionary Statement Codes P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P270:Do not eat, drink or smoke when using this product.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P332+P313:IF SKIN irritation occurs: Get medical advice/attention.
P337+P313:IF eye irritation persists: Get medical advice/attention.

Computed Descriptors for L(+)-allo-Threonine

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