The results showed that all of the compounds could block the neuromuscular junctional excitation potentials (EJP),but the blocking time had a great difference.

• 结果表明：它们均能阻断果蝇幼虫神经肌肉兴奋性接点电位，但其阻断时间相差很大。阻断过程可分为3种：（1）电位逐渐被阻断；