methyl 4-bromo-3-hydroxythiophene-2-carboxylate; CAS No.: 95201-93-7; methyl 4-bromo-3-hydroxythiophene-2-carboxylate. PROPERTIES: methyl 4-bromo-3-hydroxythiophene-2-carboxylate is a crystalline solid. Its molecular formula is C7H5BrO3S, and the molecular weight is approximately 243.08 g/mol. The compound has a melting point of approximately 70-72 C. It is moderately soluble in common organic solvents such as ethyl acetate and tetrahydrofuran, but is poorly soluble in water. 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 thiophene ring, a bromo group, a hydroxyl group, and an ester group, it may exhibit certain reactivity and stability. 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, methyl 4-bromo-3-hydroxythiophene-2-carboxylate serves as a versatile intermediate. The bromo group provides a site for substitution or coupling reactions. The hydroxyl group can be converted to other functional groups such as ether or ester. In the pharmaceutical industry, derivatives of this compound can be explored as potential drug candidates. For example, in the development of certain anti-inflammatory drugs, the structure of methyl 4-bromo-3-hydroxythiophene-2-carboxylate can be modified to enhance the drug's efficacy and reduce side effects (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 organic semiconductors or photovoltaic materials, where its structure can influence the material's electronic and optical properties (as noted in materials chemistry research papers).