A narcotic alkaloid, C18H21NO4, related to codeine, used as an analgesic and a sedative chiefly in the form of its hydrochloride salt.

• 欧克西克锭一种麻醉性的生物碱，C18H21NO4，和可待因有关的，用作止育药和镇静药，主要以其盐酸化物盐的形式存在