Sourcing the primary component

In most lures one component sets the dose and the others set the character. That first component is the one whose lot-to-lot consistency decides whether a blend performs the same way next season, so it is the one worth specifying most tightly.

What makes a component the primary one

Usually it is the compound with the highest load and the widest tolerance for small errors. That is a property of the blend, not of the chemistry: the same material can be central in one formulation and a trim in another, depending on what the target responds to. What matters for sourcing is that once a compound is in that position, drift in its isomeric ratio shows up directly in catch, while drift in a minor component is absorbed.

The four parameters worth writing down

• Isomeric form and ratio. The descriptor in the name is a release condition, and the ratio of the named isomer to its partner is what the certificate reports.
• Assay basis. Which method, and whether the figure is on an as-is or dried basis. Two certificates can quote the same number and mean different things.
• Lot size and packing. A 1 kg trial and a 25 kg drum are not the same purchase: headspace, handling and the number of times the container is opened all change.
• Documentation. A batch-specific COA with the method named, and an SDS for the material as supplied.

What we need from you

The CAS number, the quantity for the first order, the packing you can handle on site and the destination country. If a specification sheet exists on your side, send it — comparing two documents is faster and more honest than comparing two descriptions. A blend sheet is useful but not required; without one, the answer stays at the level of the single compound, which is still enough to quote.

Why the primary component is quoted separately

Because the trial and the commercial batch carry different packing and a different analytical package, and because a substitution at the head of a blend is not equivalent to a substitution anywhere else. Quoting it as its own line keeps that visible instead of burying it in a blended price.

Compounds most often specified in this role sit in the acetate and diene classes; the acetate esters and conjugated dienes pages list them with the parameters above. If you already know the CAS, the full catalogue is the faster route.

Send a blend sheet or a CAS number