Status: ISO 1750 (approved)
IUPAC: (S)-α-cyano-3-phenoxybenzyl (1R,3R)-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylate or (S)-α-cyano-3-phenoxybenzyl (1R)-cis-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylate
CAS: 52918-63-5
Formula: C22H19Br2NO3
Activity: insecticides (pyrethroid ester insecticides)
Notes: The name “decamethrin” was originally proposed for this compound and was used in the literature, but was rejected because of a conflict with a trade mark.
Structure:

Deltamethrin APPLICATIONS
Biochemistry Like all pyrethroids, prevents the sodium channels from functioning, so that no transmission of nerve impulses can take place. Mode of action Non-systemic insecticide with contact and stomach action. Fast-acting. Uses A potent insecticide, effective by contact and ingestion against a wide range of pests. Crop protection uses include: Coleoptera (2.5-7.5 g/ha), Heteroptera (5.0-7.5 g/ha), Homoptera (6.2-12.5 g/ha), Lepidoptera (5.0-21 g/ha) and Thysanoptera (5-10 g/ha) in cereals, citrus, cotton, grapes, maize, oilseed rape, soya beans, top fruit and vegetables. It controls Acrididae (5.0-12.5 g/ha), and is recommended against locusts. Soil surface sprays (2.5-5.0 g/ha) control Noctuidae. It is used against indoor crawling and flying insects (12.5 mg/m2) and pests of stored grain (0.25-0.5 g/t) and timber (Blattodea, Culicidae, Muscidae). Dip or spray (12.5-75 mg/l), and pour-on (0.75 mg/kg b.w.) applications give good control of Muscidae, Tabanidae, Ixodidae and other Acari on cattle, sheep and pigs, etc. Formulation types DP; EC; EG; EW; GR; HN; PO; SC; SL; TB; UL; WG; WP. Selected tradenames: 'Decis' (crop protection uses) (Aventis); 'Kordon' (environmental health uses) (Aventis); 'K-Othrine' (environmental health uses) (Aventis); 'Butox' (veterinary uses) (Intervet); 'Delta' (Nagarjuna Agrichem); 'Deltamix' (Agrimix); 'Sadethrin' (Sanonda)

Deltamethrin ANALYSIS
Product analysis by lc with u.v. detection (AOAC Methods, 1995, 991.03, 7.5.05) or by hplc (CIPAC Handbook, 1988, D, 57; M. Vaysse et al., Anal. Methods Pestic. Plant Growth Regul., 1984, 13, 53). Residues determined by glc with ECD (Man. Pestic. Residue Anal., 1987, I, 6, S19; Anal. Methods Residues Pestic., 1988, Part I, M11; A. Ambrus et al., J. Assoc. Off. Anal. Chem., 1981, 64, 733; P. G. Baker & P. Bottomley, Analyst (London), 1982, 107, 206; P. Bottomley & P. G. Baker, ibid., 1984, 109, 85).

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