Explosives 4

Diagram of a molecule of this compound (top)

Moyerite (synthetic) was a semi-solid propellant used by Federation ships for their ullage thruster devices and emergency jettison thrusters. The propellant had an extremely fast ignition rate. It also had a relatively low specific impulse (450 isp) and a shelf life in excess of ten standard years without a significant deterioration of performance. In 2367, this propellant was stored on aboard the Federation starship USS Enterprise-D.

In that year, moyerite (synthetic) was on a list of explosives that Lieutenant Commander Data and Counselor Deanna Troi searched through in an attempt to find one that could produce enough energy to release the USS Enterprise-D and an alien ship from the Tyken's Rift. (TNG: "Night Terrors")

For the remastered episode, the name was changed from moyerite to moyerite (synthetic). Isp is a reference to specific impulse, a measure of the efficiency of rocket engines.
This molecule refers to visual effects compositor Peter Moyer. (Star Trek: The Next Generation Companion)