Anabolic Technologies Xtreme Shred was the Methyldiazirinol/Hexadrone stack (Gone Forever)
Hardcore Anabolics Solid was the standalone (It can still be found, but only on SCAM websites-I ordered 2 bottles a few months ago, was charged but never sent product, had to get a new debit card)
WAR Pharma Blade (another blend but the only prohormone is Hexadrone- I have not seen it available online, it was at my local privately owned supplement store)
Aggressive Labz has one out there which I have never tried. One member did try it as his first prohormone run and was not impressed. I am guessing this is the lesser isomer, or it is just poor quality in general.
Viscous Labz recently had a transdermal version available and it looks like that is gone..
Bottom line, things don’t look good.
I can’t remember what the different isomers are. The member who brought this up said that most companies probably don’t even know which one they are supplying though anyway. For example, if you contacted Agressive Labs to ask them, they would have no idea what you are talking about.