# US 7,608,254 B2 · Pheromones and method of preventing infestation of Contarinia nasturtii

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- Number: US 7,608,254 B2
- Document ID: US7608254B2
- Status: Granted
- Kind: B2
- Application number: 11/502,896
- Filed: 2006-08-11
- Published: 2007-05-31
- Granted: 2009-10-27
- Earliest claimed: 2004-02-12
- Assignees: Forskarpatent I Syd AB
- Inventors: Ylva Hillbur; Robert Baur; Stefan Rauscher
- Web page: https://patentgrep.com/patent/US7608254B2

## CPC

- C07C 69/003: Esters of saturated alcohols having the esterified hydroxy group bound to an acyclic carbon atom
- A01N 37/20: containing the group [IMAGE cpc-sch-A01N-0935.gif], wherein Cn means a carbon skeleton not containing a ring; Thio analogues thereof
- C07C 69/16: of dihydroxylic compounds
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS

## Abstract

The present invention relates to pheromone mixture comprising 2,9 diacetoxyundecane, 2,10-diacetoxyundecane and 2-acetoxyundecane, as a racemate or, biologically active stereoisomers thereof, as well as a method for monitoring and/or mating disruption of swede midge, Contarinia nasturtii, in Brassica vegetables, in particular Brussels sprouts, cauliflower and broccoli.

## Claims

### Claim 1

A method for reducing infestation of C. nasturtii in cabbage, wherein a sex pheromone mixture of C. nasturtii comprising 2,9-diacetoxy-undecane, 2,10-diacetoxyundecane, and 2-acetoxyundecane, either as racemates and/or as biologically active stereoisomers, is applied in an amount effective to monitor and catch, attract and kill, and/or disrupt mating of said C. nasturtii.

### Claim 2 (depends on 1)

A method for reducing infestation of C. nasturtii in cabbage according to claim 1, wherein the sex pheromone mixture is (2S,9S)-diacetoxyundecane, (2S, 10S)-diacetoxyundecane and (2S)-acetoxyundecane.

### Claim 3

A method for killing C. nasturtii in cabbage, wherein a sex pheromone mixture of C. nasturtii comprising 2,9-diacetoxyundecane, 2,10-diacetoxyundecane, and 2-acetoxyundecane, either as racemates and/or as biologically active stereoisomers, is applied in an amount effective to attract and catch said C. nasturtii into a trap provided with sticky inserts, onto which C. nasturtii is entrapped and dies.

### Claim 4

A method for killing C. nasturtii in cabbage, wherein a sex pheromone mixture of C. nasturtii comprising (2S,9S-)diacetoxy-undecane, (2S,10S)-diacetoxyundecane, and (2S)-acetoxyundecane is applied in an amount effective to attract and catch said C. nasturtii into a trap provided with sticky inserts, onto which C. nasturtii is entrapped and dies.