Laboratory evaluation of the sex pheromone and mating inhibitor of the red bollworm Diparopsis castanea Hampson (Lepidoptera, Noctuidae) was written by Marks, R. J.. And the article was included in Bulletin of Entomological Research in 1976.Computed Properties of C14H24O2 The following contents are mentioned in the article:
The four components of the sex pheromone of D. castanea are dodecan-1-yl acetate (I) [112-66-3], trans-9-dodecen-1-yl acetate (II) [35148-19-7], 11-dodecen-1-yl acetate (III) [35153-10-7], and trans-9,11-dodecadien-1-yl acetate (IV) [50767-78-7]. Increasing the proportion of II in a I/II/III/IV mixture progressively decreased male excitation; in the absence of I all concentrations of II tested were equally inhibitory. The synthetic combination of 80% IV (93% trans:7% cis) and 20% III (dicastalure), was 485-fold more potent in eliciting male activity than a female sex pheromone gland extract Reduction in male response to crude extract occurred through exposure of males to glandular II and through reduced pheromone volatility caused by extracted triglycerides. Maximum quantities of pheromone were detected in the female sex pheromone gland 6-12 h into scotophase and for ≥30 min into photophase. Greater bioassay responses were elicited by the optimal field combination of 80% IV and 20% III than for other ratios tested. Excitation and clasper extension were observed in response to the nonattractive III; this indicates a role in close-range mating behavior for this component. The threshold level of male response to sex pheromone occurred at an aerial concentration of 9.2 mols. IV/mm3/s. This suggests that aerial concentrations of 102-103 times the male threshold response level may be sufficient to cause successful communication disruption in the field. This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7Computed Properties of C14H24O2).
(E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Computed Properties of C14H24O2
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Ester – an overview | ScienceDirect Topics