Used as a scintillator in radiation detection, 4,5-Diphenyloxazole efficiently converts high-energy radiation into measurable light pulses. It is commonly employed in liquid and plastic scintillation counters for detecting alpha, beta, and gamma radiation. Due to its high fluorescence quantum yield and good solubility in organic solvents, it is often incorporated into scintillation cocktails for use in nuclear physics, environmental monitoring, and biomedical research. It also serves as a key component in luminescent materials and fluorescent probes for analytical applications.