2-Naphthalenesulfonyl chloride, 6,7-bis((phenylsulfonyl)oxy)- 6,7-Bis((phenylsulphonyl)oxy)naphthalene-2-sulphonyl chloride 6,7-Dihydroxy-2-naphthalenesulfonyl chloride, dibenzenesulfonate 63217-39-0 EINECS 264-030-8