Dolamide
From Star Trek : Freedom's Wiki
Dolamide is a versatile chemical-based energy source used in such technology as power generators, transporters, and short-range transports. In extremely pure form, dolamide can also be used to manufacture weapons.
The Valerians supplied the Cardassians with weapons-grade dolamide in the 2360s. (DS9: "Dramatis Personae")
