Methylcyclohexanone

Methylcyclohexanones are a group of three isomers: 2-methylcyclohexanone, 3-methylcyclohexanone, and 4-methylcyclohexanone.^[1] They can be viewed as derivative of cyclohexanone. They can be prepared by oxidation of methylcyclohexane as well as partial hydrogenation of the corresponding cresols. All are colorless liquids. The 2- and 3-isomers are chiral.

Methylcyclohexanones

Isomer	Structure	CAS RN	m.p. (°C)	b.p. (°C)	density (g/cm3)
2-Methylcyclohexanone		583-60-8	−13.9	165.1	0.925
3-Methylcyclohexanone		591-24-2	−73.5	170.0	0.920
4-Methylcyclohexanone		589-92-4	−40.6	171.3	0.916