Nope, it's not available and hopefully never will be.
It's mostly known for being cooked up by some chem student - and while it was apparently a half-decent opiate, he screwed up the synth, and it contained MPTP as an impurity - which kills dopaminergic neurons, causing a condition which mimics parkinsons disease (permanently) - as people who took his drug discovered the hard way. Had a delayed onset (a couple of days), too.
MPPP is not used medically. It isn't used illegally either, due to the difficulty of preparing it without the horrifically toxic impurity - nobody wants chemically induced parkinsons.
MPTP, however, is used in medical research to induce parkinsons disease in lab animals to test treatments for the condition.