A chemotype identifies a chemical-profile variant within a plant species. A common oil name may therefore be insufficient for identification. The abbreviation ct. beside a constituent refines the description but does not state that constituent's exact percentage in your bottle.
One species can have different chemotypes
In Proof of Safety, 2007, page 9, Robert Tisserand uses Ocimum basilicum with either linalool or estragole predominating as an example. He also notes variation within a species and chemotype. This illustrates the term, rather than analysing a bottle on sale.
Record the full botanical name and any stated chemotype. Do not add one from memory or from a similarly named product.
The eoASSIST oil reference
Search for oils by name and open their reference entries.
Keep these fields separate
| Field | Meaning |
|---|---|
| Species | The plant's botanical identity |
| Chemotype / ct. | A chemical-profile distinction within the species |
| Batch | The product identifier used to match documents |
| Analysis result | Data for a particular sample and stated method |
| Product concentration | A separate composition detail, not established by ct. |
If the label only gives a name
Check the manufacturer's technical description. Ask: "Is a chemotype specified for this item, and which batch does the document cover?" Leave the field unknown if it cannot be established. An omitted chemotype alone does not identify a counterfeit.
Do not transfer a description from one chemotype to another when comparing products. A matching chemotype also does not prove identical batch composition, quality or suitability for a particular use.
Use a reference for terminology
Find the plant and check its botanical name. A general entry helps explain terms but does not replace the manufacturer's documentation. Keep the label photo, item code and batch number together.
Start with botanical names and matching a batch report. This guide explains labels and does not select a chemotype for treatment or a home-use protocol.
The eoASSIST oil reference
Search for oils by name and open their reference entries.