RADIANT SC

Insecticides

RADIANT SC

Spirotetramat Mode of Action: Inhibitors of acetyl CoA carboxylase (23) Chemical Class Tetronic and Tetramic acidderivatives (23) Spirotetramat is an azaspiro compound that is methoxycyclohexane which is fused at position 4 to the 5-position of a 1,5-dihydro-2H-pyrrol-2-one that is substituted at positions 3 and 4 by 2,5-dimethylphenyl and(ethoxycarbonyl)oxy groups, respectively (the cis isomer). It is a proinsecticide (via hydrolysis of the ethyl carbonate groupto give the corresponding 4-hydroxypyrrol-2-one, “spirotetramat-enol”) and is used for the control of a wide range ofsucking insects on fruit and potato crops. It has a role as a proinsecticide, an EC 6.4.1.2 (acetyl-CoA carboxylase) inhibitorand an agrochemical. It is a member of benzenes, an azaspiro compound, a carbonate ester, a gamma-lactam and amember of pyrroles – Agrochemicals -> Pesticides Insecticides Spirotetramat is effective against stinging-sucking insects,including aphids, mites and whitefly. Its action is based on the interruption of lipid biosynthesis in the insects. It is asystemic insecticide, which is sprayed on the leaves of the plant and penetrates the leaves. In the plant it is hydrolyzed tothe enol form by cleavage of the central ethoxycarbonyl group. The resulting enol is quite stable due to the fact that thedouble bond is in a ring and due to its conjugation with the amide group (mainly) and the benzene ring. The enol formed isalso much more soluble in water so that it can move up and down the plant so that it also protects the roots.