The Search for VXΒΆ

For a while now I have been pondering the delights of TVR (Tequila, Vodka, Redbull) . It got me thinking, if we can name a beverage after a make of car then we must be able to name it after a chemical weapon.

VX sprung to mind, a nice toxic nerve agent. So we have to letter to convert to alcohol or mixer. The easy one is V, Vodka. Now this is where I am stuck. I need to find an X to go with it.

Any ideas??

Anybody?? Come on help me out here