Indole-3-acetic acid

CAS Registry Number®

87-51-4

CAS Name

Indole-3-acetic acid

Molecular Formula

C10H9NO2

Molecular Mass

175.18

Cite this Page

Indole-3-acetic acid.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=87-51-4 (retrieved 2025-07-12) (CAS RN: 87-51-4).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    168.5 °C

  • Density (2)

    1.576 g/cm³

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C10H9NO2/c12-10(13)5-7-6-11-9-4-2-1-3-8(7)9/h1-4,6,11H,5H2,(H,12,13)

InChIKey

InChIKey=SEOVTRFCIGRIMH-UHFFFAOYSA-N

SMILES

C(C(O)=O)C=1C=2C(NC1)=CC=CC2

Canonical SMILES

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

Other Names for this Substance

  • 1H-Indole-3-acetic acid
  • Indole-3-acetic acid
  • 3-IAA
  • Heteroauxin
  • IAA

View All

Deleted or Replaced CAS Registry Numbers

54692-39-6

CAS INSIGHTSTM
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