7-[3-(3-nitro-benzoylamino)-benzoylamino]-naphthalene-1,3-disulfonic acid
2-aminonaphthalene-6,8-disulfonate
7-(3-amino-benzoylamino)-naphthalene-1,3-disulfonic acid
7-(3-nitro-benzoylamino)-naphthalene-1,3-disulfonic acid
m-nitrobenzoic acid chloride