Rescalure

Structural formula
Structural formula without complete stereochemistry
General
Surname	Rescalure
other names	(3 S , 6 R ) - (3 S, 6 S ) -6-isopropenyl-3-methyldec-9-en-1-ylacetate
Molecular formula	C 16 H 28 O 2
Brief description	greenish liquid
External identifiers / databases
CAS number 64309-03-1 67601-10-9 [(3 S , 6 S )] - shape 67601-06-3 [(3 S , 6 R )] - shape PubChem 13229577 ChemSpider 11322491 Wikidata Q21600820
properties
Molar mass	252.39 g mol −1
Physical state	liquid
Melting point	<-20 ° C
boiling point	280.8 ° C
Vapor pressure	26 mPa (20 ° C)
solubility	practically insoluble in water
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Rescalure is a mixture of two chemical compounds from the group of acetic acid esters and an insect pheromone . The compound is used for the biological control of the scale insect Aonidiella aurantii ("Red Californian scale insect ") in citrus cultivation. The common name stands for a mixture of the (3 S , 6 R ) - and (3 S, 6 S ) - diastereomers in a ratio of 50:50 (± 5).

Stereochemistry

Rescalure has two stereocenters and accordingly forms four stereoisomers . A mixture of diastereomers, a mixture of

• (3 S , 6 S ) -6-isopropenyl-3-methyldec-9-en-1-ylacetate and
• (3 S , 6 R ) -6-Isopropenyl-3-methyldec-9-en-1-ylacetate.

The two diastereomers each occur in the mixture in a proportion between 45% and 55%.

Rescalure diastereomers
CAS number: 67601-10-9
CAS number: 67601-06-3

Admission

In 2012, the Spanish company Ecologia y Protección Agrícola submitted an application for approval of the active ingredient, which was approved in December 2015.

In some EU countries, plant protection products with this active ingredient are approved, but not in Germany, Austria or Switzerland.

Individual evidence

1. ↑ ^{a b c d e} Entry on rescalure in the BioPesticide Properties DataBase (BPDB) of the University of Hertfordshire , accessed on December 3, 2015.
2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
3. ↑ European Food Safety Authority : Conclusion on the peer review of the pesticide risk assessment of the active substance rescalure . In: EFSA Journal . tape 13 , no. 2 , 2015, doi : 10.2903 / j.efsa.2015.4031 .
4. ↑ Scalebur ( Memento of 19 December 2015, Internet Archive ).
5. ↑ General Directorate Health and Food Safety of the European Commission: Entry on Rescalure in the EU pesticide database ; accessed on January 15, 2018.
6. ↑ General Directorate Health and Food Safety of the European Commission: Entry on Rescalure in the EU pesticide database ; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; accessed on March 25, 2016.