Keto-Enol
From Star Trek : Freedom's Wiki
Keto-Enol is the homeworld of the Enolians.
During the 22nd century, smuggling, among many other crimes, was rampant in the star system. To enforce their laws, the Enolians set up strict rules through out the star system, including the fact that people caught will be sent to a prison camp, and then tried.
In 2152, Captain Archer and Commander Tucker visited Keto-Enol, and had a successful first contact. They landed and played Pan Zan, a local sport similar to water polo. However, on their way out, they were arrested for what the Enolian Guard thought was contraband, and they were sent to Canamar.
Later, Enterprise visited the planet to pick up an Enolian official, to help them find their missing crew. (ENT: "Canamar")