1-Hydroxy-5-chlorosulfonyl-2-naphthalenediazonium hydroxide, inner salt 1-Naphthalenesulfonyl chloride, 6-diazo-5,6-dihydro-5-oxo- 2-Diazo-1-naphthol-5-sulfonyl chloride 2-Diazo-1-naphthone-5-sulfonic acid chloride 2-Diazo-1-naphthone-5-sulfonyl chloride 28020-74-8 3770-97-6 6-Diazo-5,6-dihydro-5-oxo-1-naphthalenesulfonyl chloride 6-Diazo-5,6-dihydro-5-oxonaphthalene-2-sulphonyl chloride 68959-13-7 EINECS 223-211-1