(E)-11-Tetradecenal

(E)-11-Tetradecenal (CAS 35746-21-5) is a C14 aldehyde used as a female sex pheromone component in surveillance and IPM work against Obliquebanded leafroller and other species.

Our file records 4 targets for this material — Obliquebanded leafroller (Choristoneura rosaceana); Jack pine budworm (Choristoneura pinus); Spruce Budworm (Choristoneura fumiferana); Omnivorous leafroller (Platynota stultana) — spanning tortricids and allies. That is why it is held for surveillance and programme work rather than as general stock.

It goes into lures and into analytical standards. The same lot can serve both, which helps when a programme needs to compare trap catches against a reference chromatogram.

Inside a budworm or leafroller programme

Tortricid sex pheromones are almost always multi-component, and the ratios carry the species message. (E)-11-Tetradecenal is one of the components used to build those ratios. A blend that is right for one species in a stand can be close to useless for a congener fifty metres away, which is why programmes run species-specific blends side by side rather than one broad-spectrum lure.

Catch is read as a trend across weeks: the first sustained catch dates the flight, the peak dates the window for any intervention, and the tail of the curve tells you whether a second generation is present.

Isomer, stability and handling

Aldehydes are the most oxidation-sensitive class here. In practice the (E)/(Z) geometry of the double bond, not the headline assay figure, is what decides whether a blend behaves as the specification intends, so the isomer statement on the certificate is the number to read first.

Store cool, dry and dark: sealed under nitrogen or argon at −20 °C for holdings longer than one season, and let containers reach room temperature before opening so condensation does not enter the material. Weigh and formulate in a ventilated area; the safety data sheet gives handling detail for the neat substance.

Documentation and packing

Documentation is lot-based: certificate of analysis, GC trace and safety data sheet travel with the consignment, and an isomer-ratio statement can be added where a specification calls for it.

Standard packing for this line is 1kg / 25kg / 50kg, with smaller development quantities available so a blend can be trialled before a bulk order. Lead time is confirmed at quotation.

Specification

Product name	(E)-11-Tetradecenal
CAS number	35746-21-5
Molecular formula	C14H26O
Molecular weight	210.36 g/mol
Chemical class	Aldehyde
Function	Female sex pheromone component
Assay and isomeric purity	Stated per lot on the certificate of analysis
Standard packing	1kg / 25kg / 50kg
Development quantity	Available on request, below standard pack
Lead time	Confirmed at quotation
Catalogue reference	S3-35746-21-5

Target species recorded against this compound

• Obliquebanded leafroller Choristoneura rosaceana
• Jack pine budworm Choristoneura pinus
• Spruce Budworm Choristoneura fumiferana
• Omnivorous leafroller Platynota stultana

Species records are drawn from the blend literature filed for this material. Where a programme targets a species not listed, the blend is usually a ratio question rather than a different compound — send the target and we will confirm.