A synthetic organic drug C₉H₈N₂O₂ that is usu. mixed with magnesium hydroxide, is a mild stimulant of the central nervous system, and is used experimentally to improve memory.

佩默林(一种刺激中枢神经系统的药物，被试用来增强记忆)。化学式为 C₉H₈N₂O₂。