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Key Documents

Safety Information

89179

Sigma-Aldrich

L-Threonine

≥99.5% (NT), BioXtra

Synonym(s):

(2S,3R)-2-Amino-3-hydroxybutyric acid

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About This Item

Linear Formula:
CH3CH(OH)CH(NH2)CO2H
CAS Number:
Molecular Weight:
119.12
Beilstein:
1721646
EC Number:
MDL number:
UNSPSC Code:
12352209
eCl@ss:
32160406
PubChem Substance ID:
NACRES:
NA.26

product name

L-Threonine, BioXtra, ≥99.5% (NT)

product line

BioXtra

Quality Level

Assay

≥99.5% (NT)

form

powder or crystals

optical activity

[α]20/D −28.5±0.5°, c = 5% in H2O

impurities

≤0.5% foreign amino acids

ign. residue

≤0.1%

loss

≤0.1% loss on drying, 20 °C (HV)

color

white to off-white

mp

256 °C (dec.) (lit.)

solubility

H2O: 50 mg/mL, clear, colorless

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤100 mg/kg

cation traces

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
NH4+: ≤500 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

C[C@@H](O)[C@H](N)C(O)=O

InChI

1S/C4H9NO3/c1-2(6)3(5)4(7)8/h2-3,6H,5H2,1H3,(H,7,8)/t2-,3+/m1/s1

InChI key

AYFVYJQAPQTCCC-GBXIJSLDSA-N

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Application


  • Reconstruction the feedback regulation of amino acid metabolism to develop a non-auxotrophic L-threonine producing Corynebacterium glutamicum.: This research utilizes L-Threonine as an internal standard for the detection and optimize the production of L-Threonine on genetically modifying Corynebacterium glutamicum aiming at more sustainable and cost-effective bio-manufacturing processes (Liu et al., 2024).

  • Threonine dehydrogenase regulates neutrophil homeostasis but not H3K4me3 levels in zebrafish.: This research utilises L-Threonine as a chemical treatment to study the enzymatic activity of threonine dehydrogenase in regulating neutrophil function in zebrafish (Li et al., 2024).

Other Notes

Preparation of threonine-sepharose, assay and purification of protein kinase C; Amino acid spacing in isotachophoresis on polyacrylamide gel - a critical evaluation; Growth requirement of various microorganisms.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

89179-VAR:
89179-10G:
89179-BULK:
89179-250G:
89179-50G:


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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T. Hine et al.
Electrophoresis ?83, 541-541 (1984)
CRC Handbook of Microbiology, 4, 1-1 (1974)
Assay and purification of protein kinase C.
T Kitano et al.
Methods in enzymology, 124, 349-352 (1986-01-01)
Amino acid spacing in isotachophoresi; on polyacrylamide gel: a critical evaluation.
N Y Nguyen et al.
Analytical biochemistry, 94(1), 202-210 (1979-04-01)
Tamara Seredenina et al.
Antioxidants & redox signaling, 23(5), 490-513 (2014-02-04)
Voltage-gated proton channels are increasingly implicated in cellular proton homeostasis. Proton currents were originally identified in snail neurons less than 40 years ago, and subsequently shown to play an important auxiliary role in the functioning of reactive oxygen species (ROS)-generating

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