Trimethylbenzene Explained

The trimethylbenzenes constitute a group of substances of aromatic hydrocarbons, which structure consists of a benzene ring with three methyl groups (–CH₃) as a substituent.^{[1] [2]} Through their different arrangement, they form three structural isomers with the molecular formula C₉H₁₂. They also belong to the group of C₃-benzenes. The best-known isomer is mesitylene.^[3]

Trimethylbenzenes
Common name			mesitylene
Systematic names	1,2,3-trimethylbenzene vic.-trimethylbenzene	1,2,4-trimethylbenzene asym.-trimethylbenzene	1,3,5-trimethylbenzene sym.-trimethylbenzene
Structural formula
CAS Registry Number	526-73-8	95-63-6	108-67-8

Notes and References

1. Web site: Acute Exposure Guideline Levels for Selected Airborne Chemicals: Volume 13.. The National Center for Biotechnology Information. ncbi.nlm.nih.gov. 7 September 2016.
2. Web site: Trimethylbenzene - all isomers. The Scottish Environment Protection Agency. apps.sepa.org.uk. 7 September 2016.
3. Web site: 1,3,5-Trimethylbenzene. Sigma-Aldrich Co. LLC.. sigmaaldrich.com. 7 September 2016.