Guaiazulene

Guaiazulene

Names
IUPAC name 1,4-Dimethyl-7-isopropylazulene
Identifiers
CAS Number	489-84-9 Y
3D model (Jmol)	Interactive image
ChEBI	CHEBI:5550 Y
ChemSpider	3395 Y
ECHA InfoCard	100.007.002
KEGG	D01037 Y
PubChem CID	3515
UNII	2OZ1K9JKQC Y
InChI InChI=1S/C15H18/c1-10(2)13-7-5-11(3)14-8-6-12(4)15(14)9-13/h5-10H,1-4H3 Y Key: FWKQNCXZGNBPFD-UHFFFAOYSA-N Y InChI=1/C15H18/c1-10(2)13-7-5-11(3)14-8-6-12(4)15(14)9-13/h5-10H,1-4H3 Key: FWKQNCXZGNBPFD-UHFFFAOYAG
SMILES CC1=C2C=CC(=C2C=C(C=C1)C(C)C)C
Properties
Chemical formula	C15H18
Molar mass	198.31 g·mol−1
Density	0.976 g/cm3
Melting point	31 to 33 °C (88 to 91 °F; 304 to 306 K)
Boiling point	153 °C (307 °F; 426 K) (7 mm Hg)
Pharmacology
ATC code	S01XA01 (WHO)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YN ?)
Infobox references

Guaiazulene, also azulon or 1,4-dimethyl-7-isopropylazulene, is a dark blue crystalline hydrocarbon. A derivative of azulene, guaiazulene is a bicyclic sesquiterpene that is a constituent of some essential oils, mainly oil of guaiac and chamomile oil, which also serve as its commercial sources. Various soft corals also contain guaiazulene as a principal pigment. Its low melting point makes guaiazulene difficult to handle, in contrast to the crystalline nature of the parent azulene. The electronic structure (and colors) of guaiazulene and azulene are very similar.

Guaiazulene is an U.S. FDA-approved cosmetic color additive. It - or its 3-sulfonate - is a component of some skin care products together with other skin soothing compounds such as allantoin.

Guaiazulene has applications as a volatile dye with a known evaporation rate to indicate end of use of various products (such as insecticide strips).