In numerous industries such as agrochemicals and pharmaceuticals, halogenated chemicals abound. The most common agrochemicals include pesticides and fertilizers. Organosulfur compounds are used in pharmaceuticals, dyestuffs, and agrochemicals. Specialty chemicals are used as starting materials for production of agrochemicals and pharmaceuticals. Polymorphism is relevant to the fields of pharmaceuticals, agrochemicals, pigments, dyestuffs, foods, and explosives. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Some of them have found industrial applications in the synthesis of pharmaceuticals and agrochemicals. It is also a starting material for pharmaceuticals and agrochemicals manufacturing. The company was in the business of pharmaceuticals and agrochemicals. Throughout the 1970s through 1980s, pesticide research continued into producing more selective agrochemicals. Trifluoromethylated compounds are of some importance in pharmaceutical industry and agrochemicals. Zeneca Agrochemicals was part of AstraZeneca, and formerly of Imperial Chemical Industries. As possible reasons for the decline, the authors highlight neonicotinoids and other agrochemicals. In 2007 tomatoes, lettuce and strawberries showed the highest rates of contamination by agrochemicals. Many research agrochemicals are never publicly marketed.