^^ Sorry Roy I probably havent explained it so clearly.
I hoped the pics might help but sometimes they make it more complex.
When you make MDMA all you are doing is modding the safrol molecule to form the shape of the MDMA molecule. Because molecules are made up of bonds of atoms you do this by making and breaking the bonds.
The reason safrol is used to make MDMA is because it is one of the closest naturally forming molecules available to MDMA.
You could mod any molecule to make MDMA but every bond you make or break is often quite tricky, time consuming and usually requires other chemicals so when you are making something you want it to be as close as possible to the target molecule.
So the PMMA story:
Basically in some safrol there is a small impurity of estragole. Estragole is an analog of safrol meaning it shares similiar shape properties not identical but similiar.
Because it shares these similiar shape properties it means if you start to modify certain atoms of the safrol molecule then that process will also have the same effect on the certain atoms on the estragole molecule.
In the process of turning the safrol molecule into MDMA it happens to turn the estragole molecule into PMMA.
This is why there is a trace amount of PMMA in the Mortal Kombats.
If you look at the pictures move from Safrol to Isasafrol to MDMA
Then look at the pictures move from Estragole to Anethole to PMMA
You will see the changes happening to both molecules are the same.
This is because throughout the process the Estragole is mixed in with the Safrol and they go through the same atom modification process.
Hopefully this makes a bit more sense
