ChemArche
Sign inAccount

Molecule record

Alizarin

C14H8O4

240.21 g/mol

2D structure for Alizarin

Molecular properties

Formula
C14H8O4
Molar mass
240.21 g·mol−1
Exact mass
240.0423 Da
11
2
4
74.60 Ų
3.2 (PubChem computed XLogP3-AA descriptor)
CAS
72-48-0
PubChem CID
6293

Interactions

Polarity
Often polar; exact polarity depends on size, substitution, and ionization state.
Acid-base behavior
Review ionizable groups and pKa data where available; ChemForge does not infer definitive acid-base state from identity alone.
Intermolecular forces
Assess dispersion, dipole interactions, hydrogen bonding, and ionic character from the functional groups shown.

Functional groups

Alcohol
Alkene
Aromatic ring
Phenol

Physical properties

PropertyValueConditionsSource
Logp3.2PubChem computed XLogP3-AA descriptorPubChem(link only)

Common names and synonyms

  • 1,2-Anthraquinonediol
  • 1,2-Dihydroxy-9,10-anthracenedione
  • 1,2-Dihydroxy-9,10-anthraquinone
  • 1,2-Dihydroxyanthraquinone
  • 1,2-dihydroxyanthracene-9,10-dione
  • 72-48-0
  • ALIZARINE
  • Alizarin B
Show all 22 synonyms
  • Alizarina
  • Alizarine 3B
  • Alizarine B
  • Alizarine L paste
  • Alizarine NAC
  • Alizarine Red
  • Alizarine Red B
  • Alizarine Red IP
  • Alizarine Red L
  • Alizerine NAC
  • Eljon Madder
  • Eljon Madder M
  • Mordant Red 11
  • Turkey Red

Structure identifiers

Canonical SMILES
C1=CC=C2C(=C1)C(=O)C3=C(C2=O)C(=C(C=C3)O)O
Isomeric SMILES
C1=CC=C2C(=C1)C(=O)C3=C(C2=O)C(=C(C=C3)O)O
InChI
InChI=1S/C14H8O4/c15-10-6-5-9-11(14(10)18)13(17)8-4-2-1-3-7(8)12(9)16/h1-6,15,18H
InChIKey
RGCKGOZRHPZPFP-UHFFFAOYSA-N
PubChem CID
6293

Spectroscopy

Tabs appear only for spectra stored with clear provenance.

Open library

IR spectrum

ChemArche Original Educational Content(redistributable)

Simulated FTIR trace

Predicted FTIR / %T

4 cm-1 resolution / deterministic instrument profile

Hover for cursor
4000350030002500200015001000500100500wavenumber (cm−1)transmittance (%)

Peak assignments

3350 cm−1broad O-H (simulated)
1645 cm−1C=C alkene (simulated)
3030 cm−1aromatic C-H (simulated)
1600 cm−1aromatic C=C (simulated)
2960 cm−1sp3 C-H (simulated)

Simulated NMR

On-demand educational prediction for Alizarin; not experimental data.

Simulated EI mass spectrum

On-demand educational fragmentation for Alizarin; not experimental data.

Sources

Molecule identity

Retrieved 8/7/2026. Reuse status is summarized by the badge; open the source for full details.

PubChem(link only)

simulated IR

ChemForge original educational simulation.

ChemArche Original Educational Content(redistributable)
Open source record