👉 It's a chemical compound named "1690. 4-Bromo-1,2-bis{2-[4-(2,2-diphenylethenyl)phenyl]ethenyl}naphthalene." 1690. 4-Bromo-1,2-bis{2-[4-(2,2-diphenylethenyl)phenyl]ethenyl}naphthalene; 675818-26-5