Showing Compound Azulene (FDB004830)

Record Information

Version

1.0

Creation date

2010-04-08 22:06:25 UTC

Update date

2025-11-18 22:57:36 UTC

Primary ID

FDB004830

Secondary Accession Numbers

Not Available

Chemical Information

FooDB Name

Azulene

Description

Azulene, also known as cyclopentacycloheptene or azulekeep, is a member of the class of compounds known as azulenes. Azulenes are polycyclic aromatic compounds containing the azulene skeleton, which consists of the cyclopentadiene ring fused to a cycloheptadiene ring. Azulene can be found in a number of food items such as anise, roman camomile, peppermint, and german camomile, which makes azulene a potential biomarker for the consumption of these food products. Azulene is a non-carcinogenic (not listed by IARC) potentially toxic compound. Azulene is an organic compound and an isomer of naphthalene. Whereas naphthalene is colourless, azulene is dark blue. Two terpenoids, vetivazulene (4,8-dimethyl-2-isopropylazulene) and guaiazulene (1,4-dimethyl-7-isopropylazulene), that feature the azulene skeleton are found in nature as constituents of pigments in mushrooms, guaiac wood oil, and some marine invertebrates . PAHs are carcinogens and have been associated with the increased risk of skin, respiratory tract, bladder, stomach, and kidney cancers. They may also cause reproductive effects and depress the immune system (L10) (T3DB).

CAS Number

275-51-4

Structure

MOL SDF PDB SMILES InChI

Synonyms

Synonym	Source
Azulen	ChEBI
Cyclopentacycloheptene	ChEBI
Azulekeep	HMDB
Azotesin	biospider
AZULENE, M.P. 99 C	biospider
Azunamic	biospider
Azusalen [as sodium sulfonate]	biospider
Bicyclo(0.3.5)deca-1,3,5,7,9-pentaene	biospider
Bicyclo(5.3.0)-1,3,5,7,9-decapentaene	biospider
BICYCLO(5.3.0)-DECA-2,4,6,8,10-PENTAENE	biospider
Bicyclo(5.3.0)decapentaene	biospider
Bicyclo[5.3.0]-1,3,5,7,9-decapentaene	biospider
Bicyclo[5.3.0]decapentaene	biospider

Predicted Properties

Property	Value	Source
Water Solubility	0.41 g/L	ALOGPS
logP	3.51	ALOGPS
logP	2.96	ChemAxon
logS	-2.5	ALOGPS
Physiological Charge	0	ChemAxon
Hydrogen Acceptor Count	0	ChemAxon
Hydrogen Donor Count	0	ChemAxon
Polar Surface Area	0 Å²	ChemAxon
Rotatable Bond Count	0	ChemAxon
Refractivity	42.51 m³·mol⁻¹	ChemAxon
Polarizability	14.7 Å³	ChemAxon
Number of Rings	2	ChemAxon
Bioavailability	Yes	ChemAxon
Rule of Five	Yes	ChemAxon
Ghose Filter	No	ChemAxon
Veber's Rule	Yes	ChemAxon
MDDR-like Rule	No	ChemAxon

Chemical Formula

C10H8

IUPAC name

azulene

InChI Identifier

InChI=1S/C10H8/c1-2-5-9-7-4-8-10(9)6-3-1/h1-8H

InChI Key

CUFNKYGDVFVPHO-UHFFFAOYSA-N

Isomeric SMILES

C1=CC2=CC=CC=CC2=C1

Average Molecular Weight

128.1705

Monoisotopic Molecular Weight

128.062600256

Classification

Description

Belongs to the class of organic compounds known as azulenes. These are polycyclic aromatic compounds containing the azulene skeleton, which consists of the cyclopentadiene ring fused to a cycloheptadiene ring.

Kingdom

Organic compounds

Super Class

Hydrocarbons

Class

Unsaturated hydrocarbons

Sub Class

Olefins

Direct Parent

Azulenes

Alternative Parents

Substituents

Azulene
Aromatic hydrocarbon
Polycyclic hydrocarbon
Aromatic homopolycyclic compound

Molecular Framework

Aromatic homopolycyclic compounds

External Descriptors

azulenes (CHEBI:31249 )
ortho-fused bicyclic arene (CHEBI:31249 )
mancude carbobicyclic parent (CHEBI:31249 )

Ontology

No ontology term

Physico-Chemical Properties

Physico-Chemical Properties - Experimental

Property	Value	Reference
Physical state	Not Available
Physical Description	Not Available
Mass Composition	Not Available
Melting Point	99 oC
Boiling Point	Not Available
Experimental Water Solubility	Not Available
Experimental logP	3.20	HANSCH,C ET AL. (1995)
Experimental pKa	Not Available
Isoelectric point	Not Available
Charge	Not Available
Optical Rotation	Not Available
Spectroscopic UV Data	Not Available
Density	Not Available
Refractive Index	Not Available

Spectra

EI-MS/GC-MS

Type	Description	Splash Key	View
EI-MS	Mass Spectrum (Electron Ionization)	splash10-004i-2900000000-ddfe7244d5f01ca46998	2014-09-20	View Spectrum
Predicted GC-MS	Azulene, non-derivatized, Predicted GC-MS Spectrum - 70eV, Positive	splash10-004i-0900000000-9100e2e177a5220488b8	Spectrum
Predicted GC-MS	Azulene, non-derivatized, Predicted GC-MS Spectrum - 70eV, Positive	Not Available	Spectrum

MS/MS

Type	Description	Splash Key	View
Predicted MS/MS	Predicted LC-MS/MS Spectrum - 10V, Positive	splash10-004i-0900000000-c58668897462a120be2c	2016-08-03	View Spectrum
Predicted MS/MS	Predicted LC-MS/MS Spectrum - 20V, Positive	splash10-004i-0900000000-5a9b05b0e3abe8a17d1d	2016-08-03	View Spectrum
Predicted MS/MS	Predicted LC-MS/MS Spectrum - 40V, Positive	splash10-004i-1900000000-9435ad04abd5c7a3b5a6	2016-08-03	View Spectrum
Predicted MS/MS	Predicted LC-MS/MS Spectrum - 10V, Negative	splash10-004i-0900000000-878dba5e57117c17431d	2016-08-03	View Spectrum
Predicted MS/MS	Predicted LC-MS/MS Spectrum - 20V, Negative	splash10-004i-0900000000-c732623515fe642c30af	2016-08-03	View Spectrum
Predicted MS/MS	Predicted LC-MS/MS Spectrum - 40V, Negative	splash10-004i-1900000000-79c79d6e40451aba8b2d	2016-08-03	View Spectrum
Predicted MS/MS	Predicted LC-MS/MS Spectrum - 10V, Positive	splash10-004i-0900000000-71e8922109bea9aa624a	2021-10-12	View Spectrum
Predicted MS/MS	Predicted LC-MS/MS Spectrum - 20V, Positive	splash10-004i-1900000000-18bcf87334724dba4c79	2021-10-12	View Spectrum
Predicted MS/MS	Predicted LC-MS/MS Spectrum - 40V, Positive	splash10-03fr-9400000000-bfa403c802210a24e88e	2021-10-12	View Spectrum
Predicted MS/MS	Predicted LC-MS/MS Spectrum - 10V, Negative	splash10-004i-0900000000-ec6816397577a7beb93f	2021-10-12	View Spectrum
Predicted MS/MS	Predicted LC-MS/MS Spectrum - 20V, Negative	splash10-004i-0900000000-ec6816397577a7beb93f	2021-10-12	View Spectrum
Predicted MS/MS	Predicted LC-MS/MS Spectrum - 40V, Negative	splash10-004i-0900000000-2e84393d7d2cb0f2230f	2021-10-12	View Spectrum

NMR

Type	Description		View
1D NMR	¹H NMR Spectrum (1D, 90 MHz, CDCl₃, experimental)		Spectrum
1D NMR	¹³C NMR Spectrum (1D, 25.16 MHz, CDCl₃, experimental)		Spectrum

External Links

ChemSpider ID

ChEMBL ID

KEGG Compound ID

Pubchem Compound ID

Pubchem Substance ID

Not Available

ChEBI ID

31249

Phenol-Explorer ID

Not Available

DrugBank ID

Not Available

HMDB ID

Not Available

CRC / DFC (Dictionary of Food Compounds) ID

Not Available

EAFUS ID

Not Available

Dr. Duke ID

AZULENE

BIGG ID

Not Available

KNApSAcK ID

Not Available

HET ID

Not Available

Food Biomarker Ontology

Not Available

VMH ID

Not Available

Flavornet ID

Not Available

GoodScent ID

Not Available

SuperScent ID

Not Available

Wikipedia ID

Azulene

Phenol-Explorer Metabolite ID

Not Available

Duplicate IDS

Not Available

Old DFC IDS

Not Available

Associated Foods

Food	Content Range	Average	Reference
Food			Reference

Biological Effects and Interactions

Health Effects / Bioactivities

Descriptor	ID	Definition	Reference
Anti-allergic	50857	An agent that reduces or blocks allergic reactions, commonly used to manage symptoms of allergies, such as itching, sneezing, and inflammation, by inhibiting the release of histamine and other chemical mediators, providing relief in conditions like hay fever, asthma, and skin allergies.	DUKE
Anti bacterial	33282	An agent that inhibits the growth of or destroys bacteria, playing a crucial role in preventing and treating infections. Therapeutically, it is used to combat bacterial infections, with key medical applications including treating pneumonia, tuberculosis, and skin infections, as well as preventing surgical site infections and sepsis.	DUKE
Anti histaminic	37956	An agent that blocks histamine receptors, reducing allergic symptoms. Therapeutically, it alleviates itching, sneezing, and runny nose, commonly used in managing allergies, itching, and hives, as well as treating conditions like anaphylaxis and allergic rhinitis.	DUKE
Anti-inflammatory	35472	An agent that reduces inflammation, playing a biological role in suppressing immune responses and therapeutic applications in managing pain, swelling, and redness. Key medical uses include treating arthritis, allergies, and autoimmune disorders, as well as relieving symptoms of conditions such as asthma and dermatitis.	DUKE
Anti pyretic	35493	An agent that reduces fever, commonly used to relieve headache, pain, and discomfort associated with elevated body temperature, and to manage fever in various medical conditions, such as infections and inflammatory diseases.	DUKE
Anti septic	33281	An agent that prevents or reduces the growth of microorganisms, such as bacteria, fungi, or viruses, to promote wound healing and prevent infection. Therapeutically, anti septics are used to treat minor cuts, scrapes, and burns, and are commonly applied topically to reduce the risk of infection and promote tissue repair. Key medical uses include wound care, surgical site preparation, and skin infection management.	DUKE
Anti-spasmodic	52217	An agent that relaxes smooth muscle, reducing muscle spasms and cramps. It plays a biological role in regulating muscle tone and is therapeutically applied to treat conditions such as irritable bowel syndrome, menstrual cramps, and muscle spasms, providing relief from abdominal pain and discomfort.	DUKE
Anti ulcer	49201	An agent that reduces stomach acid and protects the mucous lining, preventing ulcer formation. It is used to treat conditions like gastroesophageal reflux disease (GERD), peptic ulcers, and Zollinger-Ellison syndrome, promoting healing and relieving symptoms.	DUKE
Hepatoregenerative	62868	An agent that promotes liver regeneration and repair, supporting the biological role of liver tissue restoration. It has therapeutic applications in treating liver diseases, such as cirrhosis and hepatitis, and key medical uses include enhancing liver function and reducing liver damage.	DUKE
Pesticide	25944	An agent that kills or repels pests, playing a biological role in controlling insect, weed, and fungal populations. Therapeutically, pesticides have limited applications, but some are used to treat ectoparasitic infestations, such as lice and scabies. Key medical uses include topical treatments for head lice and scabies, highlighting their role in managing parasitic infections.	DUKE