C₉H₁₂

The molecular formula C₉H₁₂ may refer to:

C3-Benzenes
- Propylbenzenes
  - Cumene
  - n-Propylbenzene
- Ethyltoluenes
- Trimethylbenzenes
  - 1,2,3-Trimethylbenzene
  - 1,2,4-Trimethylbenzene
  - Mesitylene (1,3,5-trimethylbenzene)
Ethylidene norbornene
Tetravinylmethane
Vinyl norbornene

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