2-[(Z)-(4-Hydroxy-2-methylphenyl)(2-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]benzenesulfonic acid(CAS: 2303-01-7)

The compound is crystalline at room temperature. Its molecular weight is approximately 442.44 g/mol. It has limited water solubility and high solubility in organic solvents. It exhibits acidic behavior due to the benzenesulfonic acid group, making it reactive in basic conditions.

This compound is synthesized via the condensation of 4-hydroxy-2-methylbenzaldehyde and 2-methyl-4-oxo-2,5-cyclohexadienone, followed by the coupling with benzenesulfonyl chloride. The reaction is typically catalyzed by a Lewis acid and proceeds with high selectivity and good yield.

This compound is utilized in the pharmaceutical industry for its potential as a drug intermediate, in the polymer industry for modifying properties of polymers, and in analytical chemistry for its use as a sensor material and in semiconductors for its electronic properties.

Proper personal protective equipment (PPE) including gloves, goggles, and a lab coat is essential. Work should be performed in a well-ventilated area or fume hood. Spills should be handled using appropriate absorbent materials and cleaned with water. Always refer to the Safety Data Sheet (SDS) for detailed handling instructions.