Syntheselen contains b12 and ATP. I am using it now at 2ml preworkout and it's great. But it doesn't give any big preworkout rush of energy it's more long lasting.
INGREDIENTS: Magnesium Aspartate, Potassium Aspartate, Heptaminol HCL, Adenosine Triphosphate (ATP), Uridine Triphosphate, Sodium Selenite, Cyanacobalamin (B12).
5millionbucks what are the main effects your are looking for? If you want endurance and pumps then Adenosine Monophosphate (AMP) is amazing preworkout. 2ml synthelator preworkout is crazy but not the most cost effective thing.
Perhaps check out my preworkout thread as there are some great ones that can give you energy, focus, pumps, endurance etc.