C3-Benzenes

The C₃-benzenes are a class of organic aromatic compounds which contain a benzene ring and three other carbon atoms. For the hydrocarbons with no further unsaturation, there are four isomers. The chemical formula for all the saturated isomers is C₉H₁₂.

There are three trimethylbenzenes, three ethylmetylbenzenes, and two propylbenzene isomers. 1980s American gasoline contained about 3-4% C₃-benzenes.^[1]

• 
  1,2,3-trimethylbenzene or Hemellitene
• 
  1,2,4-Trimethylbenzene or Pseudocumene
• 
  1,3,5-Trimethylbenzene or Mesitylene
• 
  1,2-Ethylmethylbenzene
• 
  1,3-Ethylmethylbenzene
• 
  1,4-Ethylmethylbenzene
• 
  Cumene
• 
  n-Propylbenzene
• 
  trans-Propenylbenzene
• 
  4-Vinyltoluene

• Hemellitene
• Pseudocumene
• Mesitylene

• 1,2-Ethylmethylbenzene
• 1,3-Ethylmethylbenzene
• 1,4-Ethylmethylbenzene
• Cumene
• n-Propylbenzene

• trans-Propenylbenzene
• 4-Vinyltoluene

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