4-methylcyclohexa-1,4-diene-1-carboxylic acid; CAS No.: 53312-53-1; 4-methylcyclohexa-1,4-diene-1-carboxylic acid. PROPERTIES: 4-methylcyclohexa-1,4-diene-1-carboxylic acid is a crystalline solid. Its molecular formula is C8H12O2, and the molecular weight is approximately 148.18 g/mol. The compound has a melting point of approximately 80-82 C. It is moderately soluble in common organic solvents such as methanol and ethyl acetate, 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 cyclohexadiene ring and a carboxylic acid 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, 4-methylcyclohexa-1,4-diene-1-carboxylic acid serves as a versatile intermediate. The carboxylic acid group can undergo reactions such as esterification and amidation. The cyclohexadiene ring provides unique electronic effects. 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 4-methylcyclohexa-1,4-diene-1-carboxylic acid 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 polymers or coatings, where its structure can enhance the material's thermal stability and chemical resistance (as described in materials chemistry research papers).