Is 1-Ethyl-4-[(4-methoxyphenyl)ethynyl]benzene (CAS: 63221-88-5) safe?

1-Ethyl-4-[(4-methoxyphenyl)ethynyl]benzene is generally considered safe when handled with appropriate precautions. However, it should be used in well-ventilated areas to avoid inhalation of vapors. It is important to use personal protective equipment such as gloves and goggles. Exposure to high temperatures or direct sunlight should be avoided, and it should be stored in a cool, dry place away from sources of ignition.