9H-Xanthene(CAS: 92-83-1)

9H-Xanthene is a yellow crystalline solid with a molecular weight of approximately 168.19 g/mol. It has a low solubility in water but is soluble in organic solvents like ethanol and acetone. This compound is relatively stable under normal conditions but can undergo photochemical reactions. It is used in various applications due to its unique optical properties.

9H-Xanthene is commonly synthesized by the condensation of 3-isocyanatobenzaldehyde and 2-hydroxybenzaldehyde in the presence of a base like sodium hydroxide. The reaction yields a mixture of isomers, and the most desired product can be isolated by recrystallization. The yield is generally around 60-70%.

9H-Xanthene is used in pharmaceuticals for its potential as a fluorescent probe in drug discovery. It is also utilized in the production of dyes and pigments due to its vibrant yellow color. Additionally, it finds application in the development of sensors and semiconductor materials due to its unique optical properties.

Proper personal protective equipment (PPE) such as gloves, safety goggles, and a lab coat should be worn when handling 9H-Xanthene. Work should be conducted in a well-ventilated area or fume hood. In case of a spill, avoid direct contact with the skin and clean up with appropriate absorbent materials. Always refer to the Safety Data Sheet (SDS) for detailed handling and disposal information.