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61819 Sigma

L-Leucine

BioUltra, ≥99.5% (NT)

Synonym: (S)-2-Amino-4-methylpentanoic acid

  • CAS Number 61-90-5

  • Linear Formula (CH3)2CHCH2CH(NH2)CO2H

  • Molecular Weight 131.17

  •  Beilstein Registry Number 1721722

  •  EC Number 200-522-0

  •  MDL number MFCD00002617

  •  PubChem Substance ID 57651866

  •  eCl@ss 32160406

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Properties

Related Categories Amino Acids, Amino acids, BioUltra, Biochemicals and Reagents, Cell Biology,
InChI Key   ROHFNLRQFUQHCH-YFKPBYRVSA-N
product line   BioUltra
assay   ≥99.5% (NT)
optical activity   [α]20/D +15.5±0.5°, c = 5% in 5 M HCl
impurities   insoluble matter, passes filter test
  ≤0.3% foreign amino acids
ign. residue   ≤0.1%
loss   ≤0.1% loss on drying, 20 °C (HV)
mp   >300 °C(lit.)
solubility   1 M HCl: soluble0.1 M at 20 °C, clear, colorless
anion traces   chloride (Cl-): ≤200 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
  Ca: ≤10 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+: ≤100 mg/kg
  Na: ≤100 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Sr: ≤5 mg/kg
  Zn: ≤5 mg/kg
λ   0.1 M in 1 M HCl
UV absorption   λ: 260 nm Amax: 0.05
  λ: 280 nm Amax: 0.05

Description

Other Notes

As spacer in isotachophoresis of serum proteins; Growth requirement of various microorganisms

Price and Availability

Suggested Laboratory Gloves


Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.



Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
1

Documents

Certificate of Analysis

Protocols & Articles

Articles

Characteristic Metabolites for Inborn Errors of Amino Acid Metabolism

Inborn errors of metabolism are caused by changes in specific enzymatic reactions and hundreds of different such alterations, which affect about 1 of every 5000 newborns, have been characterized. The...
Keywords: Indicators, Metabolism, Metabolites

Related Content

Amino Acids Reference Chart

The hydrophobicity index is a measure of the relative hydrophobicity, or how soluble an amino acid is in water. In a protein, hydrophobic amino acids are likely to be found in the interior, whereas h...

Peer-Reviewed Papers
15

References

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