73003-81-3 Benzoic acid, 3,4,5-tris(((6-diazo-5,6-dihydro-5-oxo-1-naphthalenyl)sulfonyl)oxy)-, ethyl ester EINECS 277-206-4 Ethyl 3,4,5-tris(((6-diazo-5,6-dihydro-5-oxo-1-naphthyl)sulphonyl)oxy)benzoate Ethyl 3,4,5-tris(1-naphthalenesulfoxy-6-diazo-5,6-dihydro-5-oxo)benzoate