Benzethonium chloride

Benzethonium chloride (C27H47ClNO2) was a painkiller used in hospitals.

In 2151, following a rock climbing accident on Risa, Ensign Travis Mayweather was given bezethonium chloride at a Risan hospital. He turned out to be highly allergic to it, and suffered from swelling that threatened to constrict his airway.