I received MX422 in my order without asking for it. I can’t find any info about it.
What’s it made for?
This is taken from one of the stickies hope it helps 
**Experimental Test Mixes (MX):**These are mixes of ExperiMones and Putatives that are very simply put, experimental. Some have been submitted by our fellow forum members, some merely look like they could be a good idea, some are mixing mistakes that actually show potential. There are no guarantee they will work, but even so, they are still offered with a guarantee. Whenever you see a post or thread about MX followed by a series of three numbers this is what the member is referring too. By their very nature they are experimental and not proven to be effective or may not even work at all. While they might sound romantic and sure, with so many users reporting on them, you might want to jump on the bandwagon. Again we encourage members to participate and do their own research, but please take heed. The members who are reporting on these mixes are mostly well experienced and understand how certain pheromones interact with each other. Everyone of us all started out using the Consumer (Instant) line products I mentioned above. I can promise you a certain type of result when you use A314 . With MX??? all I can promise you is that it has pheromones in it. What it does, how it works, why it works is for you to discover and then report back to the rest of us.
Ahem: