Pyrifenox

Structural formula
	Mixture of ( E ) and ( Z ) form
General
Surname	Pyrifenox
other names	[1- (2,4-dichlorophenyl) -2-pyridin-3-yl] ethanone- O- methyloxime; rondo; Dorado;
Molecular formula	C 14 H 12 Cl 2 N 2 O
Brief description	clear, brownish liquid
External identifiers / databases
EC number	618-138-0
ECHA InfoCard	100.111.187
PubChem	55790
Wikidata	Q19298809
properties
Molar mass	295.16 g mol −1
Physical state	liquid
boiling point	> 150 ° C (13.3 Pa )
solubility	very sparingly soluble in water (0.115 g l −1 at 20 ° C)
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 302
	P: no P-phrases
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Pyrifenox a chemical compound from the group of pyridines and a fungicide . Pyrifenox was founded in 1986 by Dr. R. Maag (now Syngenta ) introduced.

Extraction and presentation

Pyrifenox can be obtained from ethyl 2,4-dichlorobenzoate and ethyl 3-pyridine acetate , which react with one another in the presence of sodium methoxide . The product thereof is reacted with O- methylhydroxylamine in the 2nd step .

use

Pyrifenox is used as a systemic fungicide against numerous fungal diseases in banana, peanut, vegetable and wine growing. The active ingredient works by inhibiting the ergosterol biosynthesis.

Admission

Pyrifenox was approved in Germany from 1993 to 2000. No plant protection products containing this active ingredient are permitted in the EU or Switzerland .

Individual evidence

↑ ^a ^b ^c ^d ^e Entry on Pyrifenox. In: Römpp Online . Georg Thieme Verlag, accessed on January 10, 2015.
↑ ^a ^b Datasheet Pyrifenox, PESTANAL at Sigma-Aldrich , accessed on January 10, 2015 ( PDF ).
↑ Thomas A. Unger: Pesticide Synthesis Handbook . William Andrew, 1996, ISBN 0-8155-1853-6 , pp. 155 ( limited preview in Google Book search).
↑ approval history of the BVL .
↑ General Directorate Health and Food Safety of the European Commission: Entry on Pyrifenox in the EU pesticide database ; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; accessed on March 27, 2016.

[roempp-1] Entry on Pyrifenox. In: Römpp Online . Georg Thieme Verlag, accessed on January 10, 2015.

[Sigma-2] Datasheet Pyrifenox, PESTANAL at Sigma-Aldrich , accessed on January 10, 2015 ( PDF ).

[unger-3] Thomas A. Unger: Pesticide Synthesis Handbook . William Andrew, 1996, ISBN 0-8155-1853-6 , pp. 155 ( limited preview in Google Book search).

[historie-4] roval history of the BVL .

[5] General Directorate Health and Food Safety of the European Commission: Entry on Pyrifenox in the EU pesticide database ; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; accessed on March 27, 2016.