Enterprise in an atmospheric layer of cyclohexane
Cyclohexane is a hydrocarbon comprising six carbon atoms and twelve hydrogen atoms (C6H12).
Cyclohexane comprised one of the atmospheric layers of a class 7 gas giant planet discovered by Enterprise NX-01 in 2151. The cyclohexane layer was just above a layer of liquid phosphorus, which went against the expectation of T'Pol. (ENT: "Broken Bow")