7211. Phenothrin

Nomenclature

CAS number: 26002-80-2
2,2-Dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid (3-phenoxyphenyl)methyl ester; 2,2-dimethyl-3-(2-methylpropenyl)cyclopropanecarboxylic acid m-phenoxybenzyl ester; 3-phenoxybenzyl cis,trans-chrysanthemate; S-2539; Sumithrin (Sumitomo).
C23H26O3; mol wt 350.45.
C 78.83%, H 7.48%, O 13.70%.

Description and references

Synthetic pyrethroid insecticide. Prepn of racemic mixture: N. Itaya et al., DE 1926433 corresp to US 3666789 (1969, 1972 to Sumitomo). Comparative activity of isomers: K. Fujimoto et al., Agric. Biol. Chem. 37, 2681 (1973); Y. Okuno et al., DE 2348930 corresp to US 3934023 (1973, 1976 to Sumitomo). Analysis: Y. Takimoto et al., Anal. Methods Pestic. Plant Growth Regul. 13, 133-146 (1984). Review of toxicology and human exposure: Toxicological Profile for Pyrethrins and Pyrethroids (PB2004-100004, 2003) 332 pp.

Chemical structure

Properties

The commercial product is a mixture of isomers. Colorless liquid. d2525 1.06; nD25 1.5483. Sol in acetone, xylene. Insol in water.

Use

Insecticide.