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alpha-Naphtholphthalein

1-Naphthol-5-sulfonic acid

1-Naphthol-8-sulfonic acid

1-Naphthol-4-sulfonic acid

2-Naphthol-6-sulfonic acid potassium salt

2-Naphthonitrile

1,4-Naphthoquinone

1,8-Naphthosultone

2-Naphthoxyacetic acid