Tryptophan

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L-Tryptophan
Skeletal formula of L-isomer
Ball-and-stick model of L-isomer
Names
IUPAC name
Tryptophan or (2S)-2-amino-3-(1H-indol-3-yl)propanoic acid
Ither names
2-Amino-3-(1H-indol-3-yl)propanoic acid
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.000.723
KEGG
UNII
Properties
C11H12N2O2
Molar mass 204.23 g·mol−1
Soluble: 0.23 g/L at 0 °C,

11.4 g/L at 25 °C,
17.1 g/L at 50 °C,
27.95 g/L at 75 °C

Solubility Soluble in het alcohol, alkali hydroxides; insoluble in chloroform.
Acidity (pKa) 2.38 (carboxyl), 9.39 (amino)[1]
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Tryptophan (IUPAC-IUBMB abbreviation: Trp or W; IUPAC abbreviation: L-Trp or D-Trp; sauld for medical uise as Tryptan)[2] is ane o the 22 staundart amino acids an an essential amino acid in the human diet, as demonstratit bi its growth effects on rats.

References[eedit | eedit soorce]

  1. Dawson RMC; et al. (1969). Data for Biochemical Research. Oxford: Clarendon Press. ISBN 0-19-855338-2. 
  2. IUPAC-IUBMB Joint Commission on Biochemical Nomenclature. "Nomenclature and Symbolism for Amino Acids and Peptides". Recommendations on Organic & Biochemical Nomenclature, Symbols & Terminology etc. Retrieved 2007-05-17.