1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo-, 4-(1,1-dimethylethyl)phenyl ester 29305-34-8 31600-99-4 4-(1,1-Dimethylethyl)phenyl 6-diazo-5,6-dihydro-5-oxo-1-naphthalenesulfonate 4-(tert-Butyl)phenyl 6-diazo-5,6-dihydro-5-oxonaphthalene-1-sulphonate EINECS 250-723-2