Protection studies of new bis quaternary 2-(hydroxyimino)-N-(pyridin-3yl) acetamide derivatives (HNK-series) oximes against acute poisoning by dichlorvos (DDVP) in Swiss albino mice

新型双季铵盐2-(羟基亚氨基)-N-(吡啶-3-基)乙酰胺衍生物（HNK系列）肟类化合物对瑞士白化小鼠二氯苯氧乙酸（DDVP）急性中毒的保护作用研究