Em <400 nm UV

Naphthoresorcinol (1,3-Dihydroxynaphthalene) is a fluorescent dye with an excitation wavelength (λex) of 330 nm and an emission wavelength (λem) of 380 nm.

Pyrene is a carcinogenic polycyclic aromatic hydrocarbon (PAH) and a sensitive blue fluorescent group with an excitation wavelength of 338 nm and an emission wavelength of 375 nm. It can be used to detect protein-lipid interactions and conformational changes and also serves as an electron donor material.

NIR-βgal-2, a highly sensitive β-galactosidase-activated near-infrared fluorescent probe, facilitates the visualization of β-galactosidase in breast cancer [1].

Diphenyl-1-pyrenylphosphine （DPPP） is a probe (Ex/Em=351/380 nm) that undergoes a stoichiometric reaction with hydrogen peroxide to generate the fluorescent molecule DPPP-o. It is commonly employed for detecting lipid hydrogen peroxide levels and cellular oxidation.