What is OMS written as an another name of many Insecticide.?

Huh...I wonder what they want us to be..Doctor or Chemist..??

First of all which are that names..

Malathion : OMS-1
Fenthion : OMS-2
Abate : OMS-786 ( also known as Temephos )
Propoxur : OMS-33 ( the only natural insecticide )

Only above are more important..Others are there but...No need to cram those..

Now coming to the MAIN question that is full name of OMS

it is OMS- Octahedral Molecular Seive, It is kind of Chemical Structure these all insecticide have...