Izitshabalalisi zePyrethroid zineempawu eziqinileyo ze-chiral kwaye zihlala zineenantiomers ezininzi ze-chiral.Nangona ezi enantiomers zineepropathi zenyama kunye neekhemikhali ezifanayo ncam, zibonisa imisebenzi yokubulala izinambuzane eyahluke ngokupheleleyo kunye neempawu zebhayoloji kwi-vivo.Ubuthi kunye namanqanaba entsalela yokusingqongileyo.Ezinje ngeCypermethrin, Beta-Cypermethrin, Alpha-cypermethrin;i-beta-cypermethrin, i-cyhalothrin;Beta Cyfluthrin, cyfluthrin, njl.

Cypermetrin
I-Cypermethrin sesona sibulali zinambuzane sisetyenziswa kakhulu kwipyrethroid.Isakhiwo sayo se-molecular iqukethe amaziko e-chiral e-3 kunye ne-8 enantiomers.Ii-enantiomers ezahlukeneyo zibonisa umahluko omkhulu kwimisebenzi yebhayoloji kunye netyhefu.
Ii-isomers ezi-8 ze-Cypermethrin zenza iipere ezi-4 ze-racemates.Kukho umahluko ocacileyo kwisiphumo sokubulala kunye nesantya sokufota iisomeri ezahlukeneyo zeCypermethrin kwizinambuzane.Umsebenzi wabo we-insecticidal ukusuka kunamandla ukuya kubuthathaka yi-cis, i-trans Formula, i-cis-trans cypermethrin.
Phakathi kwe-isomers ezisibhozo zeCypermethrin, ezimbini kwezine ze-isomers kunye ne-cis isomers ezine zisebenza kakuhle.
Nangona kunjalo, ukuba i-isomer eyodwa ephezulu ye-Cypermethrin isetyenziswe njenge-pesticide, kungekhona nje ukuba umsebenzi wayo we-insecticidal uphuculwe kakhulu, kodwa kunye netyhefu kwizinto ezingajoliswanga kunye nemiphumo emibi kwindalo inokuncitshiswa.Ke ngoko, iBeta-Cypermetrin kunye neAlpha-cypermetrin zabakho:

I-Alpha-cypermetrin
I-Alpha-cypermethrin ihlukanisa iifom ezimbini eziphantsi okanye ezingasebenziyo kumxube oqukethe i-cis-isomers ezine, kwaye ifumana umxube we-1: 1 oqulethe i-cis-isomers ezimbini eziphezulu kuphela.
I-Alpha-cypermethrin inomsebenzi ophindwe kabini we-insecticidal ye-Cypermethrin.

Beta-Cypermetrin
Beta-Cypermethrin, igama lesiNgesi: Beta-Cypermethrin
I-Beta-Cypermethrin ikwabizwa ngokuba yicis-trans cypermethrin ephezulu.Iguqula ifom engasebenziyo ye-cypermethrin yobugcisa equkethe i-isomers ye-8 kwifom ephezulu kakhulu ngokusebenzisa i-catalytic isomerization, ngaloo ndlela ifumana i-isomers ye-cis ephezulu kunye ne-cypermethrin ephezulu.Umxube weepere ezimbini ze-racemates ze-trans isomers zine-4 isomers, kunye nomlinganiselo we-cis kunye ne-trans malunga ne-40:60 okanye i-2:3.
I-Beta- Cypermethrin ineepropati ezifanayo ze-insecticidal njenge-Cypermethrin, kodwa ukusebenza kwayo kwe-insecticidal malunga namaxesha angama-1 aphezulu kune-Cypermethrin.
I-Beta-Cypermethrin ayinabungozi kakhulu kubantu nakwizilwanyana, kwaye ubutyhefu bayo kwizitshabalalisi zococeko bulingana okanye bukhulu kune-Alpha-cypermethrin, ngoko ke ineenzuzo ezithile ekuthinteleni nasekulawuleni izinambuzane ezicocekileyo.

Shwankathela
Ekubeni umsebenzi we-biological we-cis-high-efficiency form ngokubanzi uphezulu kune-trans-high-efficiency form, umyalelo we-insecticidal umsebenzi wabazalwana abathathu be-cypermethrin kufuneka ube: Alpha-cypermethrin≥Beta-Cypermethrin>Cypermethrin.
Nangona kunjalo, iBeta-Cypermethrin inempembelelo yococeko olungcono lokulawula izinambuzane kunezinye iimveliso ezimbini.