Midaflur (INN; EXP 338) is an extremely stable 3-imidazoline derivative with central skeletal muscle relaxant and sedative properties in humans[1] and other species of mammals, exhibiting consistently high oral bioavailability and a long duration of action.

While its pharmacodynamics remain poorly understood, midaflur resembles meprobamate and pentobarbital in terms of observed effects while being considerably more potent.

[2]