2-(4-Styryl-3-sulfophenyl)-2H-naphtho(1,2-d)triazole phenylester 58984-31-9 61240-93-5 6994-51-0 Benzenesulfonic acid, 5-(2H-naphtho(1,2-d)triazol-2-yl)-2-(2-phenylethenyl)-, phenyl ester EINECS 230-264-4 Phenyl 4-(2H-naphtho(1,2-d)triazol-2-yl)stilbene-2-sulphonate