Alfa-cipermetrina...
Chemical name (IUPAC) (S)-α- cyano-3 phenoxybenzyl-(1R)-cis-3-(2,2-
dichlorovinyl)-2,2-dimethylcyclopropane carboxylate
and
(R)-α- cyano-3 phenoxybenzyl-(1S)-cis-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane carboxylate(= cis-2 isomer pair of cypermethrin)
Chemical name (CA) Racemate comprising
[1S-[1α(R*), 3α]]-cyano-(3-phenoxyphenyl)methyl 3-(2,2 dichloroethenyl)-2,2-dimethylcyclopropane carboxylate
and
[1R-[1α (S*), 3α]]-cyano-(3-phenoxyphenyl)methyl 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropane carboxylate
Cipermetrina...
Chemical name (IUPAC) (RS)-α-cyano-3 phenoxybenzyl-(1RS)-cis, trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane carboxylate
(4 isomer pairs : cis-1, cis-2, trans-3, trans-4)
Chemical name (CA) cyano(3-phenoxyphenyl)methyl 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropane carboxylate