It is mainly used as chemical intermediate, can be used as insecticide, for example making pesticide toad killing agent ;

用途主要用于化学中间体，可作杀虫剂，如制造农药杀蟆丹； 还可制备季胺化合物，作为改性合成各种处理助剂和添加剂。

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The invention relates to a special killing agent for preventing, removing, trapping, and killing cockroaches, ants, greyish brown ants, brown ants, and formica rusca Linnaeus.

本发明是一种专用于防除、诱杀蟑螂、蚂蚁、黑蚁、褐蚁、红蚁 的一种杀剂。

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GENETICALLY modified stem cells are to be injected into the brains of cancer patients, where they will convert an inactive cancer drug into a potent and targeted tumour-killing agent.

将经过基因改选的干细胞注入癌症患者的大脑内，干细胞会将脑内的不活跃的抗癌药物转变为可以消灭肿瘤的、强有力的、靶向明确的抗癌剂。

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Also in Kandahar two Taliban suicide bombers attacked a government intelligence office killing one agent.

VOA: standard.2009.09.12

Sandia National Laboratories is working on a bacteria-killing agent to clean contaminated offices.

CNN: Ten things you need to know about anthrax

In 2009, American troops opened fire at a Baghdad airport checkpoint, killing Italian secret service agent Nicola Calipari and wounding a just-freed Italian hostage, journalist Giuliana Sgrena, whom Calipari was trying to spirit out of the country.

CNN: Italians ask: Can Americans get away with murder?

Mexican police say they have arrested a suspect in the killing of a US border agent in Arizona in 2010.

BBC: Mexican arrested over US agent 'Fast and Furious' murder