Portas V

From Memory Alpha, the free Star Trek reference

Portas V is the fifth planet of the Portas system, located not far from the Demilitarized Zone. It is the site of a Breen settlement.

In 2373, the Maquis obtained large cold-storage units from the Breen on Portas V to maintain their stocks of the biogenic weapon cobalt diselenide. (DS9: "For the Uniform")