Thiodi-1,4-phenylene bis(6-diazo-5,6-dihydro-5-oxonaphthalene-1-sulfonate)

thiodi-1,4-phenylene bis(6-diazo-5,6-dihydro-5-oxonaphthalene-1-sulphonate) ; 1-naphthalenesulfonicacid, 6-diazo-5,6-dihydro-5-oxo-, 1,1'-(thiodi-4,1-phenylene) ester ; 1-naphthalenesulfonicacid, 6-diazo-5,6-dihydro-5-oxo-, thiodi-4,1-phenylene ester (9ci) ; 2-diazo-1-naphthoquinone-5-sulfonicacidesters ; bis[6-diazo-5,6-dihydro-5-oxo-1-naphthalenesulfonic acid]thiodi-4,1-phenylene ester