What Is Fenchol? Aroma, Fenchyl Alcohol and Research

What is fenchol?

Fenchol is a terpene alcohol with the molecular formula C10H18O. That means its molecules contain 10 carbon atoms, 18 hydrogen atoms and one oxygen atom. The NIST Chemistry WebBook lists fenchyl alcohol among its alternative names.

Here, “alcohol” describes a chemical group. It does not mean ethanol, the alcohol in drinks. PubChem’s general fenchol record uses CAS number 1632-73-1 and does not specify one particular spatial form. More detailed names can identify a specific form, so retain those details when comparing ingredient records.

What does fenchol smell like?

The FEMA Flavor Library describes fenchyl alcohol with camphor and lemon notes and lists it as flavor ingredient 2480. These are sensory reference terms, not proof that a whole plant or finished blend will smell exactly like either reference.

Where does the basil connection come from?

A 2004 study of three sweet-basil cultivars investigated enzymes involved in terpene production, including a fenchol-producing enzyme. The researchers also found differences in terpene production among the cultivars.

The useful lesson is that basil has a mixture of aroma compounds. Fenchol is part of the chemistry researchers study; describing it as the sole source of all basil aroma would oversimplify that work.

Its listing as a flavor ingredient also does not make every fenchol-containing material interchangeable. A laboratory standard, concentrated ingredient and finished food are different products with different intended uses.

Fenchol vs. fenchyl alcohol vs. fenchone

The NIST fenchone record confirms the different formula and chemical identity. When a source discusses fenchone, its findings should not automatically be attributed to fenchol.

What does the fenchol brain-health study show?

A 2021 preclinical study by Razazan and colleagues investigated fenchol and a receptor called FFAR2. The work used computer screening, cultured cells and experimental worm and mouse systems to study processes related to amyloid-beta, a protein associated with Alzheimer’s disease.

The researchers reported effects on protein clearance and cellular senescence, a state in which cells stop dividing. These findings generated a research hypothesis. The study was not a clinical trial showing that fenchol prevents or treats Alzheimer’s disease in people.

It also did not establish that smelling an aroma, eating basil or using a fenchol-containing consumer product reproduces those experimental effects. Keep the tested material, model and measured outcome together when reading a headline.

A quick research-reading checklist

Checking a box is a reading aid, not a medical assessment. Our guide to reading cannabis research explains these distinctions in more detail.

Common questions about fenchol

Keep exploring

Sources are linked beside the relevant claims. This guide explains aroma chemistry and research evidence; it does not provide treatment or formulation instructions.