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• hdp1
• hdp2
• hdp3

• 2-methylindole
• Non-ferrous Iron-free aluminium sulphate
• Non-ferrous Iron-free aluminium sulphate
• o-Anisidine-4-sulfonic acid
• N-methyldiphenylamine
• p-Tolylhydrazine hydrochloride
• N-ethyl-2-methylindole
• 4-Bromopheny Lhydrazine hydrochloride
• 2,3-dimethylindole
• High-purity ammonium alum
• 2,5-Dimethylindole
• Sulfuric acid, aluminum ammonium salt (2:1:1)
• Phenyl hydrazine
• phenyl hydrazine hydrochloride
• N-butyl-2-methylindole

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