Methylstyrene may refer to the following isomers of C9H10 (molar mass 118.179 g/mol):
- α-Methylstyrene
- trans-Propenylbenzene (trans-β-methylstyrene)
- 4-Vinyltoluene (4-methylstyrene)
Methylstyrene may refer to the following isomers of C9H10 (molar mass 118.179 g/mol):