I doubt this is actually that hard to make if you have access to a mushroom grow. It probably just involves treating the extract with acetic acid or something like that... I haven't read a single thing about synthesizing it. I seriously doubt it's being done from the ground up though.
I also think Shulgin was right, this is just metabolized to psilocin and is a slow release form of it, as opposed to psilocybin which has quite a vertical launch.
People have reported coming up almost immediately on it when they inject it. That doesn't prove it's a new psychoactive. What it's more likely to mean is that it's going straight to their liver and being de-acetylated to psilocin almost immediately. Which is what IV'ing anything will do to you. It'll take a second or two to hit your liver, where the enzymes will pound the protective groups off it as they try to metabolize it.
I'd expect the phosphate to enter the brain quicker than the acetyl form. Try IV'ing some psilocybin and see how long that takes to start doing something. I expect it won't be very long at all. Does that make the phosphate a unique psychoactive compared to psilocin? Nope.
Things with protective groups on them like that have a tricky time crossing the blood brain barrier. If they didn't, they'd hit you immediately as they dissolved in your stomach. It takes time for them to cross into the bloodstream and longer to go through the liver before crossing over into the brain it's self.
I'd still be interested to try it. But personally, I like to go fucking extreme on the shrooms, to the half ounces. I don't mind the strong rise so long as I can get the stuff in my mouth before the world starts breathing in it's beautiful and magical, living ways and solids start dripping.
"Hello again Peach!
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"Hello!
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