Disparlur

Structural formula
	(7 S , 8 R ) - (-) - Disparlur
General
Surname	Disparlur
other names	(7 S , 8 R ) - (-) - Disparlur; cis -7,8-epoxy-2-methyloctadecane; cis -2-decyl-3- (5-methylhexyl) oxirane; (2 R , 3 S ) -2-decyl-3- (5-methylhexyl) oxirane ( IUPAC ) ;
Molecular formula	C 19 H 38 O
Brief description	odorless liquid
External identifiers / databases
EC number	249-861-6
ECHA InfoCard	100.045.313
Wikidata	Q30023446
properties
Molar mass	282.51 g mol −1
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 315-319-335
	P: ?
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Disparlur is the generic name for cis -7,8-epoxy-2-methyloctadecan , a synthetic pheromone , which is used as an attractant.

Isomers and occurrences

cis -2-decyl-3- (5-methylhexyl) oxirane occurs naturally as the (2 R , 3 S ) and (2 S , 3 R ) enantiomers . The (2 S , 3 R ) enantiomer plays an essential role as the sex pheromone of female gypsy moth, Lymantria dispar , and nun butterfly, Lymantria monacha .

use

Sponge spider males (attracted by Disparlur).

Disparlur is used for crop protection by combining it as an attractant with an insecticide . Spreading Disparlur means that male sponge spiders can no longer find the females. The substance also causes the gypsy moth to eat, which promotes the absorption of the actual insect venom.

literature

Habermehl, Hammann, Krebs, Ternes: Natural product chemistry . 3. Edition. SpringerLink, ISBN 978-3-540-73732-2 .

Individual evidence

↑ ^a ^b ^c Entry on Disparlur. In: Römpp Online . Georg Thieme Verlag, accessed on December 5, 2016.
↑ Template: CL Inventory / not harmonized There is not yet a harmonized classification for this substance . A labeling of cis-7,8-epoxy-2-methyloctadecane in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on January 13, 2020, is reproduced from a self-classification by the distributor .
↑ DE2646946 (A1) - 1978-04-20 - Disparlur as an insect repellent

[Römpp-1] Entry on Disparlur. In: Römpp Online . Georg Thieme Verlag, accessed on December 5, 2016.

[2] Template: CL Inventory / not harmonized There is not yet a harmonized classification for this substance . A labeling of cis-7,8-epoxy-2-methyloctadecane in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on January 13, 2020, is reproduced from a self-classification by the distributor .

[3] DE2646946 (A1) - 1978-04-20 - Disparlur as an insect repellent