High Quality Amino Acids – H-Tle-OH CAS 20859-02-3 L-tert-Leucine High Quality – Ruifu

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High Quality Amino Acids – H-Tle-OH CAS 20859-02-3 L-tert-Leucine High Quality – Ruifu Detail:

Manufacturer with High Purity and Stable Quality
Chemical Name: H-Tle-OH; L-tert-Leucine
CAS: 20859-02-3
High Quality, Commercial Production

Chemical Name	H-Tle-OH
Synonyms	L-tert-Leucine; (S)-2-Amino-3,3-dimethylbutyric Acid
CAS Number	20859-02-3
CAT Number	RF-PI314
Stock Status	In Stock, Production Scale Up to Tons
Molecular Formula	C6H13NO2
Molecular Weight	131.17
Melting Point	≥300℃(lit.)
Boiling Point	217.7±23.0℃ at 760 mmHg
Density	1.0±0.1 g/cm3
Water Solubility	125.5 g/L (20℃)
Storage	Store at Room Temperature
Brand	Ruifu Chemical

Item	Specifications
Appearance	White to Off-White Powder
Identification	IR; HPLC
Solubility	Soluble in Water
Loss on Drying	≤0.50%
Residue on Ignition	≤0.50%
Specific Rotation	-8.0°～ -11.0° (C=3% in Water)
Heavy Metals (Pb)	≤10ppm
Related Substances
Enantiomeric Purity	D-Ter-Leucine ≤0.50%
Any Other Impurity	≤0.50%
Total Impurities	≤1.0%
Chiral Purity	≥99.0%
Assay	98.0%~102.0% (on dried basis)
Storage	Preserve in well sealed container, store in cool and dried place, away from strong light and heat, when stored under above condition, the retested date is 2years away from manufactured date
Test Standard	Enterprise Standard
Usage	Amino Acid; Pharmaceutical Intermediate

Package: Bottle, Aluminum foil bag, Cardboard drum, 25kg/Drum, or according to customer’s requirement.

Storage Condition: Store in sealed containers at cool and dry place; Protect from light, moisture and pest infestation.

H-Tle-OH, L-tert-Leucine (CAS 20859-02-3) is an essential amino acid making up one third of our muscle protein. L-tert-leucine is important in developing chiral pharmaceutically active chemicals. It can also be used for the production of Chiral tridentate Schiff base ligands. It is a nonproteogen chiral amino acid. Because of the high steric hindrance of tert-butyl group, the derivatives of tert-leucine can be used as templates to induce asymmetry in asymmetric synthesis. Because of the large tert-butyl chain and its hydrophobicity, it can well control the molecular conformation in the synthesis of polypeptides, and increase the hydrophobicity of polypeptides and the stability of enzymatic degradation. Our company produces L-tert-leucine by enzymatic process, the reaction conditions are mild, not easy to cause environmental pollution. It can be used as a Nutritional Supplements, Food and Feed Additives; it can be used for synthetic Anti-AIDs drugs (Atazanavir Sulfate) and Anti-HCV drugs (Telaprevir) and etc. L-tert-Leucine (CAS 20859-02-3) also can be used in the peptide synthesis.

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