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2-Amino-5,6-Dichlorobenzothiazole

2-Amino-6-Methoxybenzothiazole

2-Amino-6-Nitrobenzothiazole

2-Aminobenzothiazole

m-Aminophenol

Anilin-2,5-Disulfonic Acid

Aniline

Bromaminic Acid

4-Chloro-2-Nitroaniline

Cleve’s Acid (5-Amino-2-Naphthalenesulfonic Acid)

4,4’-Diaminobenzenesulfanilide (DASA)

1-Diazo-2-Naphthol-6-Nitro-4-Sulfonic Acid
(Nitrodiazo Acid)

1-Diazo-2-Naphthol-4-Sulfonic Acid (Diazo Acid)

N,N-Diethylaniline

4-Fluoro-3-Nitroaniline

Laurent’s Acid (5-Amino-1-Naphthalenesulfonic Acid)

Methanilic Acid (3-Aminobenzenesulfonic Acid)

Alpha-Naphthol

Beta-Naphthol

1,4-Naphthoquinone

Newille-Winther’s Acid (4-Hydroxy-1-Naphthalenesulfonic Acid Monosodium Salt)

4-Nitro-2-Aminophenol

4-Nitro-2-Aminophenol-6-Sulfonic Acid

p-Nitroaniline

m-Nitrobenzoic Acid

m-Phenylenediamine (MPD)

1-Phenyl-3-Methyl-5-Pyrazolone

Quinizarine (1,4-Dihydroxyantraquinone)

Resorcinol

Salicylic Acid

Schaeffer’s Acid (6-Hydroxy-2-Naphthalenesulfonic Acid Monopotassium Salt)

Naphthalene-ß-Sulfonic Acid Sodium Salt

Sulfanilic Acid (Free Acid and Sodium Salt)

1,4-Sulfophenyl-3-Methyl-5-Pyrazolone

2,4,5-Trichloroaniline
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