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93659 Sigma

L-Tryptophan

BioUltra, ≥99.5% (NT)

Synonym: (S)-2-Amino-3-(3-indolyl)propionic acid, L-α-Amino-3-indolepropionic acid

  • CAS Number 73-22-3

  • Empirical Formula (Hill Notation) C11H12N2O2

  • Molecular Weight 204.23

  •  Beilstein Registry Number 86197

  •  EC Number 200-795-6

  •  MDL number MFCD00064340

  •  PubChem Substance ID 57653570

  •  eCl@ss 32160406

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Properties

Related Categories Allium cepa (Onion), Allium sativum (Garlic), Aloe Vera, Amino Acids, Amino acids,
InChI Key   QIVBCDIJIAJPQS-VIFPVBQESA-N
product line   BioUltra
assay   ≥99.5% (NT)
optical activity   [α]20/D −31.5±1°, c = 1% in H2O
impurities   insoluble matter, passes filter test
ign. residue   ≤0.1%
loss   ≤0.1% loss on drying, 20 °C (HV)
mp   280-285 °C (dec.)(lit.)
solubility   0.5 M HCl: soluble0.1 g/mL at 20 °C, clear, colorless to faintly yellow
anion traces   chloride (Cl-): ≤50 mg/kg
  sulfate (SO42-): ≤50 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
  Na: ≤50 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Sr: ≤5 mg/kg
  Zn: ≤5 mg/kg
absorption   absorption0.5M/326 nm, 0.5 M HCl cut-off

Description

Other Notes

Amino acid precursor of serotonin and melatonin

In tryptophan-substituted Sephadex® and Sepharose® for the improved chromatographic separation of cellulases; As spacer in isotachophoresis of serum proteins; Growth requirement of various microorganisms.

Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. 93659.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.

Legal Information

Sephadex is a registered trademark of GE Healthcare

Sepharose is a registered trademark of GE Healthcare

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
RTECS 
YN6130000
Protocols & Articles

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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