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(2Z)-2-fluorobut-2-enedioic acid; CAS No.: 672-18-4; (2Z)-2-fluorobut-2-enedioic acid. PROPERTIES: (2Z)-2-fluorobut-2-enedioic acid is a crystalline solid. Its molecular formula is C4H4FO4, and the molecular weight is approximately 138.08 g/mol. The compound has a melting point of approximately 120-122 C. It is moderately soluble in water and organic solvents such as methanol and ethyl acetate. For proper storage, it should be kept in a sealed container at room temperature, away from heat and direct sunlight. As a compound containing a fluoro group and a conjugated dienoic acid system, it may exhibit certain acidity and reactivity. When handling it, protective gloves and eye protection should be worn. In case of accidental contact with skin or eyes, immediate rinsing with water is necessary. APPLICATIONS: In organic synthesis, (2Z)-2-fluorobut-2-enedioic acid serves as a valuable intermediate. The fluorine atom can influence the electronic properties of the molecule, and the dienoic acid system provides opportunities for various reactions such as esterification and amidation. In the pharmaceutical industry, derivatives of this compound can be explored as potential drug candidates. For example, in the development of certain antiviral drugs, the structure of (2Z)-2-fluorobut-2-enedioic acid can be modified to enhance the drug's antiviral activity and pharmacokinetic properties (as reported in medicinal chemistry journals). Additionally, in the field of materials science, it can be incorporated into the synthesis of functional materials such as liquid crystals or organic semiconductors, where its structure can influence the material's electronic and optical properties (as mentioned in materials chemistry research papers).