Cyclopentyl methyl ether, also known as cyclopentyl methyl ether, abbreviated as CPME, is a new type of environmentally friendly hydrophobic ether solvent. In the context of increasingly stringent environmental regulations and the release of sustainable development needs, traditional solvents are gradually unable to meet market demand due to their toxicity, flammability, and high environmental load.

Cyclopentanol is a colorless to light yellow viscous liquid with a distinctive musty odor. Its melting point is -19°C, boiling point is about 140.8°C, and density is about 1.004 g/cm³.