BOTANICAL CHEMISTRY LIBRARY

Explore the molecules behind the aromas.

A searchable, evidence-aware reference to plant volatiles, aroma chemistry and common sources. Explore chemical families without exaggerated medical claims.

Evidence matters: A terpene’s smell or laboratory activity does not establish that inhaling or consuming it treats a condition. Essential oils can irritate skin and can be dangerous if swallowed. Never use boiling-point charts as vaping instructions.
15 researched entries

Terpene explorer

Search by name, topic or description; filter by category. Each entry links to a supporting authoritative reference.

Monoterpene · C10H16

Myrcene

Aroma: Herbal · resinous · musky
Found in: Hops, mango, thyme

A common plant volatile; isolated myrcene should not be assumed to produce sedation in humans.

PubChem compound record ↗
Monoterpene · C10H16

Limonene

Aroma: Citrus · orange peel
Found in: Citrus peel, dill, caraway

Different optical isomers can smell different; skin sensitization is possible, especially with oxidized material.

PubChem compound record ↗
Monoterpene · C10H16

α-Pinene

Aroma: Pine · resin · forest
Found in: Pine needles, rosemary, conifers

One of two commonly discussed pinene isomers; an aroma is not proof of a clinical effect.

PubChem compound record ↗
Monoterpene · C10H16

β-Pinene

Aroma: Woody · green · pine
Found in: Conifers, rosemary, herbs

Structural isomer of alpha-pinene with a different odor character.

PubChem compound record ↗
Monoterpene alcohol · C10H18O

Linalool

Aroma: Floral · lavender · sweet
Found in: Lavender, coriander, basil

A constituent of many essential oils; human effects of isolated linalool remain uncertain.

PubChem compound record ↗
Sesquiterpene · C15H24

β-Caryophyllene

Aroma: Peppery · woody · spicy
Found in: Black pepper, cloves, hops

Studied for CB2 receptor activity in experimental models; this is not proof of clinical benefit.

PubChem compound record ↗
Sesquiterpene · C15H24

Humulene

Aroma: Woody · earthy · hoppy
Found in: Hops, sage, coriander

Also called alpha-humulene; often occurs alongside caryophyllene.

PubChem compound record ↗
Monoterpene · C10H16

Terpinolene

Aroma: Fresh · herbal · woody
Found in: Tea tree, cumin, nutmeg

Used in fragrance research; odor descriptors vary with concentration and mixture.

PubChem compound record ↗
Monoterpene · C10H16

Ocimene

Aroma: Sweet · green · floral
Found in: Basil, mint, orchids

Multiple geometric isomers exist; identify the exact isomer when comparing datasets.

PubChem compound record ↗
Monoterpene alcohol · C10H18O

Geraniol

Aroma: Rose · sweet · floral
Found in: Rose, geranium, citronella

Widely used in fragrances; may trigger contact allergy in some people.

PubChem compound record ↗
Sesquiterpene alcohol · C15H26O

Nerolidol

Aroma: Woody · floral · green
Found in: Neroli, ginger, jasmine

Exists as cis/trans isomers; research on therapeutic applications is preliminary.

PubChem compound record ↗
Monoterpenoid ether · C10H18O

Eucalyptol

Aroma: Camphor · eucalyptus · cooling
Found in: Eucalyptus, rosemary, sage

Also known as 1,8-cineole; concentrated essential oils require careful handling.

PubChem compound record ↗
Monoterpenoid alcohol · C10H20O

Menthol

Aroma: Mint · cooling
Found in: Peppermint, cornmint

Produces a cooling sensation through sensory receptors; avoid applying near infants’ faces.

PubChem compound record ↗
Monoterpenoid ketone · C10H16O

Camphor

Aroma: Sharp · medicinal · woody
Found in: Camphor tree, rosemary

Concentrated camphor can be toxic, particularly if swallowed by children.

PubChem compound record ↗
Sesquiterpene alcohol · C15H26O

Bisabolol

Aroma: Soft · floral · sweet
Found in: Chamomile, candeia tree

Common in cosmetic formulations; product effects cannot be attributed to one molecule alone.

PubChem compound record ↗

Frequently asked questions

Do terpenes determine cannabis effects?

Terpenes contribute to aroma. Claims that a single terpene reliably predicts a particular human effect are not established.

Are terpenes and cannabinoids the same?

No. They are different chemical classes, though both can occur in the same plant.

Are essential oils safe to ingest?

Do not ingest concentrated essential oils without qualified medical guidance; some can cause poisoning.

Why are aromas described differently?

Odor depends on concentration, isomer, mixtures, individual perception and context.

Sources & editorial standards

Our entries summarize established anatomy or chemical identity using the linked references. Interpretive statements are deliberately cautious. A link to a source supports the general topic, not necessarily every detail of an entry. No clinician or scientific editor has independently reviewed this website; review by a qualified expert is recommended before launch.

PubChem chemical database · NIH NCCIH: Aromatherapy · NIH NIEHS: Essential oils · NCI: Aromatherapy and essential oils

Last editorial compilation: October 2026. Recheck external links and guidance periodically.