L-Tryptophan

CAS Registry Number®

73-22-3

CAS Name

L-Tryptophan

Molecular Formula

C11H12N2O2

Molecular Mass

204.23

Cite this Page

L-Tryptophan.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=73-22-3 (retrieved 2025-05-12) (CAS RN: 73-22-3).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    282 °C

Source(s)

  • (1) Hazardous Substances Data Bank data were obtained from the National Library of Medicine (US)

Other Names and Identifiers

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)/t9-/m0/s1

InChIKey

InChIKey=QIVBCDIJIAJPQS-VIFPVBQESA-N

SMILES

C([C@@H](C(O)=O)N)C=1C=2C(NC1)=CC=CC2

Canonical SMILES

O=C(O)C(N)CC1=CNC=2C=CC=CC21

Other Names for this Substance

  • L-Tryptophan
  • Tryptophan, L-
  • l-β-3-Indolylalanine
  • Tryptophane
  • Tryptophan

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Deleted or Replaced CAS Registry Numbers

6912-86-3, 80206-30-0, 154635-35-5, 2416148-24-6, 2831375-12-1