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3,5-Dinitrosalicylic Acid

3,5-Dinitrosalicylic acid is an aromatic compound that reacts with reducing sugars and other reducing molecules to form 3-amino-5-nitrosalicylic acid, which absorbs light strongly at 540 nm. It was first introduced as a method to detect reducing substances in urine and has since been widely used. It is mainly used in assay of alpha-amylase. However, enzymatic methods are usually preferred to DNS due to their specificity.

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3-(4-Carboxybenzoyl)-2-quinolinecarboxaldehyde is a reagent with broad dynamic range for the assay of proteins and lipoproteins in solution.

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3-Acetylphenylacetylene is a white powder and is incompatible with strong oxidizers,emitting toxic fumes of carbon monoxide and carbon dioxide in fire.

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3-Acetamidononan-2-one is used in laboratory as research chemical.

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3-Aminophenol is used as hair dye intermediate. It is also used as intermediate of pharmaceutical.

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