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2,4-dichloro-6-nitrophenol; CAS No.: 609-89-2; 2,4-dichloro-6-nitrophenol. PROPERTIES: 2,4-dichloro-6-nitrophenol is a crystalline solid with a melting point of approximately 68-72 C. Its molecular formula is C6H3Cl2NO3, corresponding to a molecular weight of 266.00 g/mol. The compound exhibits low water solubility (approximately 12 mg/L at 25 C) but is soluble in polar organic solvents. It is sensitive to reducing conditions and should be stored below 15 C in a tightly sealed container away from combustible materials. Safety precautions include using explosion-proof ventilation and avoiding contact with oxidizing agents. It is classified as an oxidizing agent (Oxidation category 2) and a category 2 skin irritant. APPLICATIONS: 2,4-dichloro-6-nitrophenol serves as a key intermediate in the synthesis of various herbicide formulations, particularly those targeting photosystem II inhibitors. Its nitro group provides essential electron-withdrawing effects for herbicidal activity. In the field of medicinal chemistry, this compound is used in the preparation of antimalarial agents where its nitroaromatic group undergoes bioreduction to generate toxic metabolites in Plasmodium species. It also functions as a building block for the synthesis of fluorescent probes for nitroreductase activity, as reported in Bioconjugate Chemistry. Additionally, the compound is employed in the development of colorimetric sensors for explosive detection, where its electron-deficient aromatic system interacts with nitroaromatic explosives to produce visible color changes. Its unique electronic properties make it valuable in the synthesis of novel electrochromic materials for smart window technologies.