Tryptophan

• Formula: C₁₁H₁₂N₂O₂
• Molecular weight: 204.2252
• IUPAC Standard InChI: InChI=1S/C11H12N2O2/c12-9(11(14)15)5-7-6-13-10-4-2-1-3-8(7)10/h1-4,6,9,13H,5,12H2,(H,14,15) Copy

  
• IUPAC Standard InChIKey: QIVBCDIJIAJPQS-UHFFFAOYSA-N Copy
• CAS Registry Number: 54-12-6
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Stereoisomers:
  • L-Tryptophan
• Other names: DL-Tryptophan; DL-α-Amino-3-indolepropionic acid; DL-Trytophan; DL-Trytophane; Racemic Tryptophan; Tryptophan, DL-; Tryptophane; (.+/-.)-Tryptophan; NSC 13118; DL-Tryptophane
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• Information on this page:
  • Ion clustering data
  • References
  • Notes
• Other data available:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
• Options:
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Ion clustering data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Robert C. Dunbar

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

 +  = ( • )

By formula: Na⁺ + C₁₁H₁₂N₂O₂ = (Na⁺ • C₁₁H₁₂N₂O₂)

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Gapeev and Dunbar, 2003
Gapeev, A.; Dunbar, R.C., Na+ Affinities of Gas-Phase Amino Acids by Ligand Exchange Equilibrium, Int. J. Mass Spectrom., 2003, 228, 2-3, 825, https://doi.org/10.1016/S1387-3806(03)00242-2 . [all data]

Kish, Ohanessian, et al., 2003
Kish, M.M.; Ohanessian, G.; Wesdemiotis, C., The Na+ affinities of a-amino acids: side-chain substituent effects, Int. J. Mass Spectrom., 2003, 227, 3, 509, https://doi.org/10.1016/S1387-3806(03)00082-4 . [all data]

Notes

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• Symbols used in this document:
  

  ΔrH°	Enthalpy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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