2-Pentylidenecyclohexanone, with the CAS number 25677-40-1, is an organic compound characterized by its unique structure that includes a cyclohexanone ring and a pentylidene substituent. This compound typically exhibits a yellow to amber color and has a distinctive odor, which can be reminiscent of certain floral or fruity notes. It is a ketone, which means it contains a carbonyl group (C=O) bonded to two carbon atoms, contributing to its reactivity and potential applications in organic synthesis. The presence of the pentylidene group enhances its hydrophobic properties, making it less soluble in water but more soluble in organic solvents. 2-Pentylidenecyclohexanone may be used in various chemical reactions, including as an intermediate in the synthesis of other organic compounds or in the formulation of fragrances and flavorings. Safety data should be consulted for handling and storage, as with all chemical substances, to ensure proper precautions are taken due to potential health hazards associated with exposure.

2-Pentylidenecyclohexanone

25677-40-1: (2Z)-2-pentylidenecyclohexanone, 2-Pentylidenecyclohexanone, Brn 2355795, Cyclohexanone, 2-pentylidene-, 2-Pentylidenecyclohexan-1-one,  2-Pentylidenecyclohexan-1-one

2-Pentylidenecyclohexanone 100 µg/mL in Acetonitrile

Stability Light Sensitive
Applications 2-Pentylidenecyclohexanone, is the fragrance chemical. It can also be used in the synthesis of dialkylphenols in the presence of zirconium catalyst.
References Tetsuo, B. et al.: Kenkyu Hokoku - Asahi Garasu Zaidan, 58, 201 (1991); Hostynek, J. J., et al.: Toxicology in Vitro, 11, 377 (1997);


Applications 2-Pentylidenecyclohexanone-d9, is the labeled analogue of 2-Pentylidenecyclohexanone (P280255), which is the fragrance chemical. It can also be used in the synthesis of dialkylphenols in the presence of zirconium catalyst.
References Tetsuo, B. et al.: Kenkyu Hokoku - Asahi Garasu Zaidan, 58, 201 (1991); Hostynek, J. J., et al.: Toxicology in Vitro, 11, 377 (1997);


CAS 25677-40-1: 2-Pentylidenecyclohexanone

2-Pentylidenecyclohexanone 100 µg/mL in Acetonitrile

Ref: 04-A15984100AL-100

2-Pentylidenecyclohexanone

Ref: IN-DA003P4X

2-Pentylidenecyclohexanone

Ref: TR-P280255

2-Pentylidenecyclohexanone-d9

Ref: TR-P280257

2-Pentylidenecyclohexanone 100 µg/mL in Acetonitrile

Ref: TR-DRE-A15984100AL-100