Where to buy MTBE?

Not going to use in my truck, but was considering trying to make some race fuel for a race bike. I know it boost octane similar to Toluene & Xylene, but it also oxygenates the fuel. VP U4 race gas is oxygenated and I'm trying to duplicate the same for much less $. Anyone know where I can get a gallon? I know it's bad stuff and I promise to wear gloves and goggles when handling it so please no lectures.

anyone?