Fenvalerate - Occupational Exposures in Insecticide Application, …
网页Fenvalerate is a synthetic pyrethroid with no cyclopropane ring in the molecule. Technical-grade fenvalerate is 90–94% pure and consists of equal portions of the four stereoisomers (RR, RS, SR, SS). It may be formulated as emulsifiable concentrates, ultra-low volume concentrates, dusts or wettable powders (WHO, 1990).
网页Fenvalerate is a mixture of four stereoisomers (RR, RS, SR, SS) due to the two asymmetric carbon atoms in the molecule. It has an æ-cyanogroup on the 3-phenoxybenzyl alcohol and is a tye II pyrethroid. The SS stereoisomer is the most biologically active and is sold as esfenvalerate. 1.1.1 Synonyms, structural and molecular data Fenvalerate ...
网页Fenvalerate is a broad-spectrum pyrethroid insecticide consisting of four isomers (SS, RS, SR and RR), all being present at equal amounts in the technical material (see FAO Specification from 1993). The active substance was evaluated by JMPR several times between 1979 and 1991 for residues and toxicology.
Esfenvalerate - Wikipedia
网页Esfenvalerate is a synthetic pyrethroid insecticide marketed as Asana. It is the (S)-enantiomer of fenvalerate and has a melting point of 60 °C and a log P of 6.22.
Fenvalerate - Wikipedia
网页Fenvalerate is a synthetic pyrethroid insecticide. It is a mixture of four optical isomers which have different insecticidal activities. The 2-S alpha (or SS) configuration, known as esfenvalerate, is the most insecticidally active isomer. Fenvalerate consists of about 23% of …
网页Esfenvalerate is a synthetic pyrethroid insecticide and acaricide derived from fenvalerate. It is used for the control of various pests on crops, livestock and public health. Learn about its chemical structure, physical and chemical properties, formulations, metabolism and environmental fate.
顺式氰戊菊酯 - 维基百科，自由的百科全书
网页S-氰戊菊酯 或 顺式氰戊菊酯 （英語： Esfenvalerate）是一种 人工合成 的 拟除虫菊酯 类 杀虫剂 [2]，是 氰戊菊酯 （Esfenvalerate）的4种 立体异构体 之一，其中两个 手性碳原子 均为S构象 [3]。 在美国，食品中顺式氰戊菊酯的残留量限值为0.05 ppm [4] 参考文献. ^ Kelly, Kevin. Environmental Fate of Esfenvalerate (PDF). California Environmental Protection Agency. [January 10, 2013]. （原始内容 存档 (PDF)于2022-01-18）.
网页Esfenvalerate contains 75 percent of the Aα isomer which is the insecticidally active isomer of fenvalerate. [Fenvalerate is composed of four isomers in equal proportions: the Aα or SS, Bα or RS, Aβ or SR, and the Bβ or RR.] The CAS and TOX Chem Numbers are 66230-04-4 and 268J for esfenvalerate and 51630-58-1 and 77A for fenvalerate.
网页Fenvalerate is the ISO-approved common name for (RS)-α-cyano-3-phenoxybenzyl (RS)-2-(4-chlorophenyl)-3-methylbutyrate (IUPAC), for which the CAS number is 51630-58-1. It is a broad-spectrum pyrethroid with neurotoxic effects on insect pests. Fenvalerate is a racemic mixture of four stereoisomers ([2S,αS], [2S,αR], [2R,αS] and [2R,αR ...
Fenvalerate. - Abstract - Europe PMC
网页1991年1月1日 · Fenvalerate is a mixture of four stereoisomers (RR, RS, SR, SS) due to the two asymmetric carbon atoms in the molecule. It has an α-cyanogroup on the 3-phenoxybenzyl alcohol and is a type II pyrethroid. The SS stereoisomer is the most biologically active and is sold as esfenvalerate.