Synonyms:

4-diazo-3,4-dihydro-7-nitro-3-oxo-1-naphthalenesulfonicaci;6-nitro-4-sulfo-2,1-naphthoquinonediazide;1-diazo-2-oxo-6-nitronaphthalene-4-sulfonic acid;1-Diazo-2-hydroxy-6-nitro-4-naphthalenesulfonic acid;6-Nitro-1,2-diazooxonaphthalene-4-sulfonic acid;4-Diazo-3,4-dihydro-7-nitro-3-oxo-1-naphthalenesulfonic acid;4-diazo-3,4-dihydro-7-nitro-3-oxonaphthalene-1-sulphonic acid;2-Naphthol-1-diazo-6-nitro-4-sulfonic acid

Canonical SMILES: C1=CC2=C(C(=CC(=C2C=C1[N+](=O)[O-])S(=O)(=O)O)[O-])[N+]#N