L-Leucine CAS#61-90-5

L-Leucine CAS#61-90-5

Essential Amino Acid Source: L-Leucine is one of the eight essential amino acids, making it an important component in nutritional and biochemical applications.


High Biological Relevance: As an aliphatic amino acid found in proteins, it plays a key role in protein composition and related formulations.


Branched-Chain Amino Acid (BCAA) Value: Together with L-isoleucine and L-valine, it belongs to the important branched-chain amino acids (BCAAs) widely used in food, feed, and pharmaceutical industries.


Optical Purity Advantage: The L-form provides the biologically active enantiomer, ensuring suitability for life science and nutritional applications.



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Product Description

Product Description of L-Leucine CAS# 61-90-5

L-Leucine is one of the eight essential amino acids and belongs to the aliphatic amino acid group among the twenty amino acids commonly found in proteins. Together with L-isoleucine and L-valine, it is classified as one of the three branched-chain amino acids (BCAAs). L-Leucine and D-leucine are enantiomers of each other.


Product Application of L-Leucine CAS# 61-90-5

L-Leucine is used in amino acid pharmaceuticals, including amino acid infusions and comprehensive amino acid formulations. It is applied in the diagnosis and treatment of children with idiopathic hyperglycemia and glucose metabolism disorders, as well as conditions such as bile liver diseases associated with reduced secretion, anemia, poisoning, muscular dystrophy, poliomyelitis, neuritis, and certain mental disorders.


Product Information

Parameters


Melting point>300 °C (lit.)
alpha15.4 º (c=4, 6N HCl)
Boiling point122-134 °C(Press: 2-3 Torr)
bulk density300-400kg/m3
density1,293 g/cm3
vapor pressure<1 hPa (20 °C)
refractive index1.4630 (estimate)
FEMA3297 | L-LEUCINE
Fp145-148°C
storage temp.2-8°C
solubility1 M HCl: 50 mg/mL
formpowder
pka2.328(at 25℃)
colorWhite to Off-white
Odorat 100.00?%. odorless
PH5.5-6.5 (20g/l, H2O, 20℃)
biological sourceplant
Optical Rotation[α]20/D +15.5°, c = 2 in 6 M HCl
Water Solubility22.4 g/L (20 C)
λmaxλ: 260 nm Amax: 0.05

λ: 280 nm Amax: 0.05
JECFA Number1423
Sublimation145-148 ºC
Merck145451
BRN1721722
StabilityStability Moisture and light sensitive. Incompatible with strong oxidising agents.
LogP0.8
CAS DataBase Reference61-90-5(CAS DataBase Reference)
NIST Chemistry ReferenceLeucine(61-90-5)
EPA Substance Registry SystemL-Leucine (61-90-5)
Safety Statements24/25
WGK Germany3
RTECSOH2850000
TSCAYes
HS Code29224995
Hazardous Substances Data61-90-5(Hazardous Substances Data)


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