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CAS NO.: 4073-35-2; 3,5-dibromo-4-methoxybenzoic acid. PROPERTIES: This aromatic carboxylic acid features bromine substituents and a methoxy group on a benzene ring, creating a molecule with potential applications in organic synthesis and pharmaceutical research. The 3,5-dibromo-4-methoxybenzoic acid typically appears as a white crystalline powder with moderate aqueous solubility. Its molecular structure includes two bromine atoms that render the molecule reactive toward nucleophilic substitution reactions. For optimal stability and to prevent degradation, this compound should be stored at 2-8 degree Celsius in a tightly sealed container under anhydrous conditions. When handling, appropriate safety measures including nitrile gloves and safety goggles are essential. This compound is sensitive to moisture and may hydrolyze in aqueous environments. In case of accidental spillage, clean the area with a damp cloth and dispose of materials according to local regulations. APPLICATIONS: The 3,5-dibromo-4-methoxybenzoic acid serves as a valuable intermediate in the synthesis of dyes, chelating agents, and pH indicators. The bromine substituents provide handles for cross-coupling reactions, enabling the creation of substituted benzene derivatives with diverse biological activities. In medicinal chemistry, this acid functions as a building block for creating bioconjugates where the carboxylic acid groups can form amide bonds with amino-containing biomolecules. Additionally, the molecule finds utility in materials science as a cross-linking agent for polymers, leveraging the reactive bromine functionalities to create network structures. Researchers utilizing this compound benefit from its functional group versatility, enabling the development of diverse applications ranging from analytical reagents to functional materials.